期刊：
Journal of Colloid and Interface Science,2025年678(Pt A):742-756 ISSN：0021-9797
通讯作者：
Luo, Xiaohu;Liu, Yali
作者机构：
[Liu, Yali; Luo, Xiaohu; Chen, Bo] School of Chemistry and Environment, Jiaying University, Meizhou, Guangdong 514000, P. R. China;[Liu, Yali; Luo, Xiaohu; Chen, Bo] State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P.R. China;[Zhou, Chengliang] College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, Hunan 410004, China;[Peng, Jie; Pan, Xinyu; Xiong, Wentao] State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P.R. China;[Luo, Xiaohu] Engineering Research Center of Loss Efficacy and Anticorrosion of Materials of Guizhou, School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun, Guizhou 558000, P. R. China. Electronic address: luoxiaohu4812350@163.com
通讯机构：
[Luo, Xiaohu] E;[Liu, Yali] S;Engineering Research Center of Loss Efficacy and Anticorrosion of Materials of Guizhou, School of Chemistry and Chemical Engineering, Qiannan Normal University for Nationalities, Duyun, Guizhou 558000, P. R. China. Electronic address:;Sokan Research Institute of Advanced Surface Treatment and Functional Coatings, Changsha, Hunan 410600, P.R. China. Electronic address:
摘要：
Aluminum and its alloys have been widely used in our lives. However, Aluminum and its alloys is prone to corrosion, especially in harsh environment. In recent years, hydrophobic coatings were used in the corrosion protection of metal. But, the low surface tension of resins made them have a worse wettability on metal which had high surface tension, resulting in a worse adhesion of these coatings. Herein, we developed a long-lasting anti-corrosion direct-to-metal polyurethane NP-Glide coating based on the coordination effect of polyphenol and dual cross-linking. In comparative evaluation, the corrosion protection and anti-contamination performances of direct-to-metal polyurethane NP-Glide coating are significantly improved by the introduction of functional monomer dopamine methacrylamide (DMA) and TEMAc-8. The PU coatings with 10wt% TEMAc-8 possesses high impedance value (|Z|(0.01Hz)>10(9) Ω•cm(2)) after 40days of immersion in 3.5wt% NaCl solution, exhibiting a great pull-off adhesion both in dry and wet coating, and a long-term anti-corrosion performance for aluminum alloy protection.
通讯机构：
[Liu, T ] C;[Gong, SS; Li, JZ ] B;Beijing Forestry Univ, State Key Lab Efficient Prod Forest Resources, Beijing 100083, Peoples R China.;Beijing Forestry Univ, MOE Key Lab Wood Mat Sci & Applicat, Beijing 100083, Peoples R China.;Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
Soy protein adhesives;Double cross-Linked network;Bionic;Anti-mildew;Bonding strength
摘要：
Soy protein isolate (SPI) adhesive, derived from a green and low-cost sustainable biomass resource, is as an excellent alternative for fossil-based adhesives. However, the weak water-resistant bonding strength and vulnerability to mildew have hindered its practical industrial applications. Herein, inspired by the relationship between the structures and mechanical properties in cell wall of wood xylem fibers, a double cross-linked strengthening network is designed to prepare SPI adhesive with high bonding performance and mildew resistance. Functionalized lignocellulose (TOLC) acting as a skeleton, covalent interaction with SPI enhances the structural stability of the adhesive, enabling it to withstand higher loads, and the water-resistant bonding performance reaches 1.45 ± 0.09 MPa. Sodium lignosulfonate (LS) as a binder can establish a sacrificial bonding network, which provides an effective energy dissipation mechanism for the adhesive and increases the toughness by 379.23 %; meanwhile, as a natural antibacterial agent, it can effectively improve the mildew-resistant performance of SPI adhesive (5 days without mildew). This novel strategy of producing tough, multifunctional and green biomass adhesives by constructing simple double cross-linked strengthening networks provides a practical way to achieve efficient utilization of waste resources and promote sustainable development.
Soy protein isolate (SPI) adhesive, derived from a green and low-cost sustainable biomass resource, is as an excellent alternative for fossil-based adhesives. However, the weak water-resistant bonding strength and vulnerability to mildew have hindered its practical industrial applications. Herein, inspired by the relationship between the structures and mechanical properties in cell wall of wood xylem fibers, a double cross-linked strengthening network is designed to prepare SPI adhesive with high bonding performance and mildew resistance. Functionalized lignocellulose (TOLC) acting as a skeleton, covalent interaction with SPI enhances the structural stability of the adhesive, enabling it to withstand higher loads, and the water-resistant bonding performance reaches 1.45 ± 0.09 MPa. Sodium lignosulfonate (LS) as a binder can establish a sacrificial bonding network, which provides an effective energy dissipation mechanism for the adhesive and increases the toughness by 379.23 %; meanwhile, as a natural antibacterial agent, it can effectively improve the mildew-resistant performance of SPI adhesive (5 days without mildew). This novel strategy of producing tough, multifunctional and green biomass adhesives by constructing simple double cross-linked strengthening networks provides a practical way to achieve efficient utilization of waste resources and promote sustainable development.
作者机构：
College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China;College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;[Simeng Hu; Yongshang Lv; Xifei Hou; Yaxuan Hou; Xiaohua Fu] College of Life and Environmental Sciences, Central South University of Forestry and Technology, Changsha 410004, China;[Jiahao Li] College of materials science and engineering, Central South University of Forestry and Technology, Changsha 410004, China;[Tao Xu] College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
通讯机构：
[Tao Xu] C;College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
摘要：
To address the issues of electrode passivation and high electric energy consumption ( EEC ) associated with the removal of antibiotic wastewater using traditional direct current electrocatalytic oxidation (DCEO) with Boron-Doped Diamond (BDD) electrodes, this study aims to develop an efficient, low-cost, and self-cleaning BDD electrode pulsed alternating electrocatalytic oxidation (BDD-PAEO) technology. The experimental findings demonstrated that, under optimal conditions, the BDD-PAEO mode achieved a 99.9% removal efficiency for sulfamethazine (SMZ). Furthermore, the removal efficiency of COD in the BDD-PAEO mode consistently remained above 93% in 10 experimental cycles. Compared with the BDD-DCEO mode, the EEC of the BDD-PAEO mode is reduced by 17.39%, and the current efficiency ( CE ) is increased by 47.15%. The ·OH was confirmed to be the main active oxidant species for degradation of SMZ by free radical quenching experiments, electron paramagnetic resonance (EPR) and three-dimensional excitation-emission matrix (3D-EEM) spectroscopy. The degradation pathway of SMZ was revealed by density functional theory (DFT) calculation and gas chromatography-mass spectrometry (GC-MS) analysis. Toxicity estimation illustrated that BDD-PAEO technology can effectively reduce the toxicity of wastewater after SMZ degradation. This study shows BDD-PAEO technology’s high potential for efficient SMZ degradation and toxicity reduction in antibiotic wastewater, offering a novel treatment solution.
To address the issues of electrode passivation and high electric energy consumption ( EEC ) associated with the removal of antibiotic wastewater using traditional direct current electrocatalytic oxidation (DCEO) with Boron-Doped Diamond (BDD) electrodes, this study aims to develop an efficient, low-cost, and self-cleaning BDD electrode pulsed alternating electrocatalytic oxidation (BDD-PAEO) technology. The experimental findings demonstrated that, under optimal conditions, the BDD-PAEO mode achieved a 99.9% removal efficiency for sulfamethazine (SMZ). Furthermore, the removal efficiency of COD in the BDD-PAEO mode consistently remained above 93% in 10 experimental cycles. Compared with the BDD-DCEO mode, the EEC of the BDD-PAEO mode is reduced by 17.39%, and the current efficiency ( CE ) is increased by 47.15%. The ·OH was confirmed to be the main active oxidant species for degradation of SMZ by free radical quenching experiments, electron paramagnetic resonance (EPR) and three-dimensional excitation-emission matrix (3D-EEM) spectroscopy. The degradation pathway of SMZ was revealed by density functional theory (DFT) calculation and gas chromatography-mass spectrometry (GC-MS) analysis. Toxicity estimation illustrated that BDD-PAEO technology can effectively reduce the toxicity of wastewater after SMZ degradation. This study shows BDD-PAEO technology’s high potential for efficient SMZ degradation and toxicity reduction in antibiotic wastewater, offering a novel treatment solution.
摘要：
The directional migration of S-vacancy is beneficial to the separation of photogenerated carriers and the transition of electrons in semiconductors. In this study, Bi(x)/Bi(2-x)S(y)@carboxylic-cellulose (CC) photocatalyst with bionic chloroplast structure is obtained by electron beam irradiation to induce S-vacancy in Bi(2)S(3)@CC. The results of CO(2) photoreduction experiments demonstrate that the reduction rate of CO(2) to CH(3)OH by Bi(x)/Bi(2‒x)S(2.89)@CC-450 samples is 10.74 µmol·g(-1)·h(-1), and the selectivity is 92.82%. The results show that the inward migration behavior of the borderline S-vacancy (b-S(v)) induces the redistribution of electrons in Bi(x)/Bi(2-x)S(y)@CC. The Bi° clusters in Bi(x)/Bi(2-x)S(y)@CC is conducive to adsorb CO(2), and the internal S-vacancy (i-S(v)) is conducive to adsorb CH(3)OH, which accelerate the transfer of gas-phase products to realize the controllable conversion of CO(2) and photoreduction products at the gas-liquid-solid three-phase interface. This study provides a new idea for the development and utilization of green photocatalysts in clean energy.
通讯作者：
Dong, Jianyu;Ren, Tian-Bing;Yin, Shuang-Feng;Zhou, YB;Dong, JY;Yin, SF
作者机构：
[Zhou, Yongbo; Xie, Shimin; Yin, Shuang-Feng; Wu, Shaofeng; Ren, Tian-Bing; Dong, Jianyu; Han, Li-Biao; Shen, Yang; Zhou, YB; Cai, Fangfang; Shang, Qian; Yuan, Lin; Liu, Feng; Su, Lebin; Pan, Neng; Dong, JY; Yin, SF] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha, Peoples R China.;[Xie, Shimin; Dong, JY; Dong, Jianyu; Su, Lebin] Hunan First Normal Univ, Sch Phys & Chem, Changsha, Peoples R China.;[Yin, Shuang-Feng; Yin, SF] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha, Peoples R China.
通讯机构：
[Zhou, YB ; Dong, JY ; Ren, TB; Dong, JY; Yin, SF] H;[Yin, SF ] C;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha, Peoples R China.;Hunan First Normal Univ, Sch Phys & Chem, Changsha, Peoples R China.;Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha, Peoples R China.
摘要：
(Hetero)polyaryl amines are extensively prevalent in pharmaceuticals, fine chemicals, and materials but the intricate and varied nature of their structures severely restricts their synthesis. Here, we present a selective multicomponent cycloaromatization of structurally and functionally diverse amine substrates for the general and modular synthesis of (hetero)polyaryl amines through copper(I)-catalysis. This strategy directly constructs a remarkable range of amino group-functionalized (hetero)polyaryl frameworks (194 examples), including naphthalene, binaphthalene, phenanthren, benzothiophene, dibenzothiophene, benzofuran, dibenzofuran, quinoline, isoquinoline, quinazoline, and others, which are challenging or impossible to obtain using alternative methods. Copper(III)-acetylide species are involved in driving the exclusive 7-endo-dig cyclization, suppressing many side-reactions that are susceptible to occur. Due to the easy introduction of various functional units into heteropolyarylamines, multiple functionalized fluorescent dyes can be arbitrarily synthesized, which can serve as effective fluorescent probes for monitoring the pathological processes (e.g. chemotherapy-induced cell apoptosis) and studying the related disease mechanisms.
期刊：
Industrial Crops and Products,2025年223:120053 ISSN：0926-6690
通讯作者：
Li, Xiazhen;Li, XJ
作者机构：
[Wu, Yongzhong; Yu, Zheng; Li, Xiazhen; Li, Ting; Li, Xianjun] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.;[Mou, Qunying] Cent South Univ Forestry & Technol, Coll Elect Informat & Phys, Changsha 410004, Peoples R China.;[Li, Ting] Hunan Taohuajiang Bamboo Sci & Technol Co, Taojiang 413400, Peoples R China.;[Cai, Zhiyong] USDA, Forest Prod Lab, Madison, WI USA.;[He, Lin] Changsha Calf Technol Co LTD, Changsha 410035, Peoples R China.
通讯机构：
[Li, XZ; Li, XJ ] 4;498 South Shaoshan Rd, Changsha 410004, Hunan, Peoples R China.
关键词：
Bamboo;Nano-CuO enhancement;Raw material characteristics;Excellent water resistance;High strength;Flame retardancy;Adhesive-free
摘要：
Although the metallization of wood and bamboo has been successfully achieved, challenges such as low efficiency, high costs, and environmental pollution caused by liquid chemical wastes have impeded its widespread adoption in manufacturing. This study presents a novel approach to fabricating metal-reinforced bamboo composite (MRBC) with exceptional performances, utilizing bamboo residues and nano-CuO without use of adhesives. The impact of raw material characteristics, including moisture content of bamboo powder and the amount of nano-CuO additive, on functional properties such as water resistance, flame retardancy and smoke suppression of MRBC was investigated. Also, the forming mechanism of MRBC was elucidated through examination of its microstructure, chemical composition, and thermal stability. Results indicated that the MRBC containing 20 wt% nano-CuO exhibited a high modulus of rupture (MOR) of 54 MPa, an impressive modulus of elasticity (MOE) of 9.3 GPa, a notable surface hardness of 44.4 kgf/mm, and low 24 h water absorption-thickness swelling of 6.5 %, all significantly surpassing those observed in conventional panels. The MRBC exhibited a tightly wrapped, adhered, and cross-linked process under high temperature and pressure conditions, facilitated by multiple synergistic effects such as lignin melting, hydrogen bond networking, physical structure entanglement, and material redox reaction, which contributed to a dense intertwined and consolidated structure. The MRBC demonstrated exceptional structural integrity throughout the combustion process, effectively mitigating potential damage caused by structural collapse due to the incorporation of nano-CuO, which also successfully suppressed smoke and toxic CO gas emissions during combustion. The MRBC showcased advantages of environmental friendliness, water resistance, high strength, flame retardancy and smoke suppression. These attributes position it as an optimal substitute for conventional panels and make it suitable for replacing metals in specific applications. Thus, it demonstrates significant market potential and promising prospects for sustainable development.
Although the metallization of wood and bamboo has been successfully achieved, challenges such as low efficiency, high costs, and environmental pollution caused by liquid chemical wastes have impeded its widespread adoption in manufacturing. This study presents a novel approach to fabricating metal-reinforced bamboo composite (MRBC) with exceptional performances, utilizing bamboo residues and nano-CuO without use of adhesives. The impact of raw material characteristics, including moisture content of bamboo powder and the amount of nano-CuO additive, on functional properties such as water resistance, flame retardancy and smoke suppression of MRBC was investigated. Also, the forming mechanism of MRBC was elucidated through examination of its microstructure, chemical composition, and thermal stability. Results indicated that the MRBC containing 20 wt% nano-CuO exhibited a high modulus of rupture (MOR) of 54 MPa, an impressive modulus of elasticity (MOE) of 9.3 GPa, a notable surface hardness of 44.4 kgf/mm, and low 24 h water absorption-thickness swelling of 6.5 %, all significantly surpassing those observed in conventional panels. The MRBC exhibited a tightly wrapped, adhered, and cross-linked process under high temperature and pressure conditions, facilitated by multiple synergistic effects such as lignin melting, hydrogen bond networking, physical structure entanglement, and material redox reaction, which contributed to a dense intertwined and consolidated structure. The MRBC demonstrated exceptional structural integrity throughout the combustion process, effectively mitigating potential damage caused by structural collapse due to the incorporation of nano-CuO, which also successfully suppressed smoke and toxic CO gas emissions during combustion. The MRBC showcased advantages of environmental friendliness, water resistance, high strength, flame retardancy and smoke suppression. These attributes position it as an optimal substitute for conventional panels and make it suitable for replacing metals in specific applications. Thus, it demonstrates significant market potential and promising prospects for sustainable development.
期刊：
Wood Science and Technology,2025年59(2):1-18 ISSN：0043-7719
通讯作者：
Luo, H;Zuo, YF
作者机构：
[Luo, Hong; Luo, H; Xie, Zhijie; Ma, Shuai; Liao, Kai; Li, Lijun] Cent South Univ Forestry & Technol, Engn Res Ctr Forestry Equipment Hunan Prov, Changsha 410004, Peoples R China.;[Luo, Hong; Luo, H; Xie, Zhijie; Ma, Shuai; Liao, Kai; Li, Lijun] Natl Forestry & Grassland Engn Technol Res Ctr Har, Changsha 410004, Peoples R China.;[Zuo, YF; Zuo, Yingfeng] Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Peoples R China.
通讯机构：
[Luo, H ; Zuo, YF ] C;Cent South Univ Forestry & Technol, Engn Res Ctr Forestry Equipment Hunan Prov, Changsha 410004, Peoples R China.;Natl Forestry & Grassland Engn Technol Res Ctr Har, Changsha 410004, Peoples R China.;Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Peoples R China.
摘要：
Compressive creep tests (CCTs) are widely used in viscoelastic characterisation of wood. However, the prevalent use of dry friction conditions in wood CCTs often introduces considerable uncertainties into the acquired creep data. To address this critical issue, this study proposes a simple yet more accurate CCT-based strategy for viscoelastic characterisation of wood. In this strategy, oil-lubricated conditions are first designed to reduce interfacial friction in CCTs, followed by optimally fitting of the obtained creep data using multi-element (generalised) viscoelastic models. To validate this strategy, comparative CCTs of typical pinewood samples under both oil-lubricated and dry-friction conditions are conducted, and numerical simulations of the CCTs are further performed. The results indicate that: (i) the axial deformation of pinewood in dry-friction CCTs can be significantly underestimated (by up to 28.45%), leading to unrealistic creep data and viscoelastic parameters. (ii) Viscoelastic parameters calibrated from lubricated CCTs can achieve the desired creep prediction accuracy (97.09%), demonstrating a 19.28% improvement over those from unlubricated CCTs. The findings of this study highlight the critical role of reducing interfacial friction in CCTs of the pinewood, with broader implications for the accurate characterisation and prediction of the creep behavior in various woods and timber structures.
摘要：
Enhancing the stability and durability of superhydrophobic wood remains a significant challenge for its long-term application in various fields. This study presents a novel approach to developing durable superhydrophobic wood by regulating wood structure. The analyses of the mechanism revealed that Si-Ti@PDMS prepolymer infiltrated wood’s pores and cell walls, forming a highly cross-linked micro-nanoscale superhydrophobic coating extending from the exterior to the interior. The resulting superhydrophobic wood exhibited excellent hydrophobic characteristics on both its surface and various cutting surfaces. Furthermore, the water contact angles (WCA) measured on the various cut surfaces of the wood consistently exceeded 150°, thereby confirming its superhydrophobicity. Additionally, the water contact angles (WCA) at wood depth surfaces remained above 130°. This observation indicates that the non-wettability characteristic of the superhydrophobic wood extends from the surface to the interior. Consequently, even in the event of surface structural damage, the wood retains its robust hydrophobic performance. This study provides a theoretical foundation for regulating durable superhydrophobic wood, and it was beneficial to the efficient use of superhydrophobic wood in construction and furniture fields.
Enhancing the stability and durability of superhydrophobic wood remains a significant challenge for its long-term application in various fields. This study presents a novel approach to developing durable superhydrophobic wood by regulating wood structure. The analyses of the mechanism revealed that Si-Ti@PDMS prepolymer infiltrated wood’s pores and cell walls, forming a highly cross-linked micro-nanoscale superhydrophobic coating extending from the exterior to the interior. The resulting superhydrophobic wood exhibited excellent hydrophobic characteristics on both its surface and various cutting surfaces. Furthermore, the water contact angles (WCA) measured on the various cut surfaces of the wood consistently exceeded 150°, thereby confirming its superhydrophobicity. Additionally, the water contact angles (WCA) at wood depth surfaces remained above 130°. This observation indicates that the non-wettability characteristic of the superhydrophobic wood extends from the surface to the interior. Consequently, even in the event of surface structural damage, the wood retains its robust hydrophobic performance. This study provides a theoretical foundation for regulating durable superhydrophobic wood, and it was beneficial to the efficient use of superhydrophobic wood in construction and furniture fields.
期刊：
Journal of Colloid and Interface Science,2025年678(Pt C):864-872 ISSN：0021-9797
通讯作者：
Xia, Liaoyuan;Wu, Yiqiang
作者机构：
[Li, Xingong; Liao, Yu; Du, Kun; Liu, Lei; Qing, Yan; Gao, Zhifei] College of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China;[Xia, Liaoyuan] College of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China. Electronic address: xly1516@126.com;[Wu, Yiqiang] College of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China. Electronic address: wuyq0506@126.com
通讯机构：
[Xia, Liaoyuan; Wu, Yiqiang] C;College of Material Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China. Electronic address:
摘要：
Two-dimensional nano-MoS(2) holds remarkable potential for widespread use in hydrogen evolution reaction (HER) applications owing to its high catalytic activity, abundant availability, and low cost. However, its electrocatalytic performance is significantly lower than that of Pt-based catalysts necessitating strategies to improve its catalytic activity. We developed an effective strategy for enhancing the HER performance of MoS(2) based on the synergistic effect of oxygen vacancies (O(v)), heterostructures, and interfacial wettability. In particular, highly graphitized wood-based carbon (GWC) was used as a platform to prepare a hydrophilic/aerophobic MoS(2)@O(v)-NiO-GWC heterocatalyst featuring nanosheet stacking and containing abundant O(v). Consequently, a current density of 10mA cm(-2) and an overpotential of only 77mV were achieved in a 1M KOH electrolyte using the prepared catalyst; notably, the overpotential increase was only 1.2% after continuous operation for 90h. Density functional theory calculations showed that coupling MoS(2) with the O(v)-NiO heterointerface increased the exposure of the MoS(2) active sites on the heterointerface and accelerated the electron transfer between NiO and the MoS(2) interface, considerably enhancing the HER performance. Moreover, an overall urea electrolysis cell assembled using this heterocatalyst demonstrated excellent hydrogen production activity and durability, with current densities of 10 and 100mA cm(-2) at cell voltages of only 1.33 and 1.46V, respectively. Even after continuous operation for 75h at a current density of 100mA cm(-2), the cell exhibited a voltage retention rate of 92.8%. These results demonstrate the potential of this nano-heterocatalyst to efficiently produce hydrogen via overall urea electrolysis.
摘要：
Isocyanate is a highly reactive compound that quickly reacts with active hydrogen, posing challenges in its use in emulsion adhesives. Micro/nanoencapsulation technology involves enclosing a core material with a protective shell under specific conditions. Encapsulating isocyanate via micro/nanoencapsulation extends its lifespan in emulsion adhesives and enables controlled release, improving the mechanical strength of the adhesive. In this study, polyurea was used as the shell material and isophorone diisocyanate as the core to prepare isocyanate micro/nanofillers via micro/nanoencapsulation. Isocyanate micro/nanofillers were prepared through interfacial polymerization in an oil-in-water system with process optimization. The obtained isocyanate micro/nanofillers had an active group content of 22.1 wt%. The shielding effect of the shell effectively prolonged the lifespan of isocyanate groups in the emulsion. After six weeks of storage, the isocyanate micro/nanofillers retained most of their activity, showing satisfactory stability. When used as functional cross-linking agents in emulsion adhesives, pressure-induced rupture of the isocyanate micro/nanofillers triggered reactions with compounds containing active hydrogen, forming strong chemical bonds and significantly improving lap shear strength (4.01 MPa), which is 4.22 times that of the original latex. Transforming isocyanate from liquid to solid via micro/nanoencapsulation not only extended its lifespan but also improved bonding performance. The prepared adhesive was solvent-free, energy-efficient, environmentally friendly, clean, low-cost, and offered excellent bonding strength. These findings will enable broad practical applications in wood structural joints, engineering assemblies, and related fields.
Isocyanate is a highly reactive compound that quickly reacts with active hydrogen, posing challenges in its use in emulsion adhesives. Micro/nanoencapsulation technology involves enclosing a core material with a protective shell under specific conditions. Encapsulating isocyanate via micro/nanoencapsulation extends its lifespan in emulsion adhesives and enables controlled release, improving the mechanical strength of the adhesive. In this study, polyurea was used as the shell material and isophorone diisocyanate as the core to prepare isocyanate micro/nanofillers via micro/nanoencapsulation. Isocyanate micro/nanofillers were prepared through interfacial polymerization in an oil-in-water system with process optimization. The obtained isocyanate micro/nanofillers had an active group content of 22.1 wt%. The shielding effect of the shell effectively prolonged the lifespan of isocyanate groups in the emulsion. After six weeks of storage, the isocyanate micro/nanofillers retained most of their activity, showing satisfactory stability. When used as functional cross-linking agents in emulsion adhesives, pressure-induced rupture of the isocyanate micro/nanofillers triggered reactions with compounds containing active hydrogen, forming strong chemical bonds and significantly improving lap shear strength (4.01 MPa), which is 4.22 times that of the original latex. Transforming isocyanate from liquid to solid via micro/nanoencapsulation not only extended its lifespan but also improved bonding performance. The prepared adhesive was solvent-free, energy-efficient, environmentally friendly, clean, low-cost, and offered excellent bonding strength. These findings will enable broad practical applications in wood structural joints, engineering assemblies, and related fields.
摘要：
Metal-organic frameworks (MOFs), with excellent structural properties, exhibit unique advantages as promising catalysts in the degradation of emerging organic contaminants (EOCs) by PS-AOPs. Herein, Co-MOF-71 was prepared by hydrothermal method using terephthalic acid (TPA) obtained from the hydrolysis of waste PET plastics as an organic ligand, and the derived cobalt/carbon composite (PETC) was prepared by carbonizing Co-MOF-71 under N 2 atmosphere. Characterizations revealed that PETC800 carbonized at 800 °C possessed a loose and porous layered morphology with a surface area of 148 cm 2 /g, and had a porous structure rich in active sites that are effective in peroxymonosulfate (PMS) activation and tetracycline (TC) degradation. Degradation experiments revealed that the maximum degradation rate of TC by PETC800 could reach 90.94% within 20 min, with a maximum rate constant of 0.2700 min −1 and activation energy of 19.50 kJ/mol, which was lower than that of previous reports. Additional studies confirmed high effectiveness also towards other pharmaceuticals degradation such as metronidazole, levofloxacin and doxorubicin. More importantly, PETC800 could degrade TC efficiently in a broad pH region (3.0–9.0). The degradation performance of TC could be 72.18% after four cycles, demonstrating good reusability. Both radical (•OH, SO 4 •− , and O 2 •− ) and nonradical pathways (singlet oxygen ( 1 O 2 ) and electron transfer) contributed to the TC degradation process, with the non-radical pathway dominating. LC-MS and toxicity analyses have postulated the degradation of TC into intermediates with lower levels of toxicity. The preparation of MOFs-derived catalysts from waste plastics allows resourceful utilization of waste plastics as well as enhances the catalytic performance of MOFs-derived cobalt/carbon-based catalysis for efficient degradation of emerging organic contaminants.
Metal-organic frameworks (MOFs), with excellent structural properties, exhibit unique advantages as promising catalysts in the degradation of emerging organic contaminants (EOCs) by PS-AOPs. Herein, Co-MOF-71 was prepared by hydrothermal method using terephthalic acid (TPA) obtained from the hydrolysis of waste PET plastics as an organic ligand, and the derived cobalt/carbon composite (PETC) was prepared by carbonizing Co-MOF-71 under N 2 atmosphere. Characterizations revealed that PETC800 carbonized at 800 °C possessed a loose and porous layered morphology with a surface area of 148 cm 2 /g, and had a porous structure rich in active sites that are effective in peroxymonosulfate (PMS) activation and tetracycline (TC) degradation. Degradation experiments revealed that the maximum degradation rate of TC by PETC800 could reach 90.94% within 20 min, with a maximum rate constant of 0.2700 min −1 and activation energy of 19.50 kJ/mol, which was lower than that of previous reports. Additional studies confirmed high effectiveness also towards other pharmaceuticals degradation such as metronidazole, levofloxacin and doxorubicin. More importantly, PETC800 could degrade TC efficiently in a broad pH region (3.0–9.0). The degradation performance of TC could be 72.18% after four cycles, demonstrating good reusability. Both radical (•OH, SO 4 •− , and O 2 •− ) and nonradical pathways (singlet oxygen ( 1 O 2 ) and electron transfer) contributed to the TC degradation process, with the non-radical pathway dominating. LC-MS and toxicity analyses have postulated the degradation of TC into intermediates with lower levels of toxicity. The preparation of MOFs-derived catalysts from waste plastics allows resourceful utilization of waste plastics as well as enhances the catalytic performance of MOFs-derived cobalt/carbon-based catalysis for efficient degradation of emerging organic contaminants.
作者机构：
College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China;[Luosong Zheng; Heping Luo; Yuxin Zhong; Wanqian Li; Han Xu; Fuquan Xiong; Jiahao Pi; Yan Qing; Yiqiang Wu] College of Materials Science and Engineering, Central South University of Forestry and Technology,Changsha 410004,PR China
通讯机构：
[Han Xu; Yan Qing] C;College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China
关键词：
Electrocatalyst;Built-in electric field;Hierarchical porous structure;Wood;Oxygen evolution reaction
摘要：
Interface engineering has emerged as a promising strategy for efficiently enhancing catalytic performance. Herein, we present a built-in electric field (BEF) strategy to assemble Co 9 S 8 /Ni 3 S 2 heterojunctions confined in S-doped carbon matrix (SC) and anchored S-doped carbide wood framework (SCW). Leveraging BEF, Co-S-Ni charge transfer channels and the superior mass transfer properties inherent in wood’s unique structure, (Co 9 S 8 /Ni 3 S 2 )@SC/SCW exhibits a low overpotential of 220 mV at 50 mA cm −2 , and remarkable stability. The experimental characterizations and theoretical simulation indicate that the constructed BEF can induce the directional transfer of electrons from Co 9 S 8 to Ni 3 S 2 , which is beneficial for the adsorption of OH - owing to the electrostatic interaction, thereby promotes the formation of the highly active amorphous metal hydroxide oxides at lower OER potentials. This work provides a new perspective for exploring the design of energy storage and conversion catalysts based on renewable wood substrates.
Interface engineering has emerged as a promising strategy for efficiently enhancing catalytic performance. Herein, we present a built-in electric field (BEF) strategy to assemble Co 9 S 8 /Ni 3 S 2 heterojunctions confined in S-doped carbon matrix (SC) and anchored S-doped carbide wood framework (SCW). Leveraging BEF, Co-S-Ni charge transfer channels and the superior mass transfer properties inherent in wood’s unique structure, (Co 9 S 8 /Ni 3 S 2 )@SC/SCW exhibits a low overpotential of 220 mV at 50 mA cm −2 , and remarkable stability. The experimental characterizations and theoretical simulation indicate that the constructed BEF can induce the directional transfer of electrons from Co 9 S 8 to Ni 3 S 2 , which is beneficial for the adsorption of OH - owing to the electrostatic interaction, thereby promotes the formation of the highly active amorphous metal hydroxide oxides at lower OER potentials. This work provides a new perspective for exploring the design of energy storage and conversion catalysts based on renewable wood substrates.
摘要：
Bamboo particleboards are recognized as a highly promising alternative to traditional wood particleboards owing to their short growth cycle, abundant availability, and exceptional mechanical properties. However, bamboo particleboards frequently exhibit undesirable hygroscopicity, which limits their broader applications. This study introduces a straightforward and inhibitor-free carbonization treatment method to enhance the water resistance properties of bamboo particleboards. During the carbonization process, the degradation of hemicelluloses and amorphous cellulose, combined with the condensation reactions among lignin molecules, leads to a significant reduction in the hydrophilic hydroxyl and carbonyl group content, resulting in a more compact micro-fibril structure. Concurrently, the degradation of specific macromolecules within the cell wall facilitates the crushing of bamboo during particleboard pressing, thereby reducing the macroscopic pore size between the particles in the board. When compared to the original bamboo particleboard, the moisture absorption, 24-h water absorption (at a relative humidity of 50 %), 24-h thickness swelling, and bound water content of the deep carbon bamboo particleboard decreased by 32.28 %, 81.57 %, 67.16 %, and 66.7 %, respectively, while the water contact angle increased by 88.89 %.
Bamboo particleboards are recognized as a highly promising alternative to traditional wood particleboards owing to their short growth cycle, abundant availability, and exceptional mechanical properties. However, bamboo particleboards frequently exhibit undesirable hygroscopicity, which limits their broader applications. This study introduces a straightforward and inhibitor-free carbonization treatment method to enhance the water resistance properties of bamboo particleboards. During the carbonization process, the degradation of hemicelluloses and amorphous cellulose, combined with the condensation reactions among lignin molecules, leads to a significant reduction in the hydrophilic hydroxyl and carbonyl group content, resulting in a more compact micro-fibril structure. Concurrently, the degradation of specific macromolecules within the cell wall facilitates the crushing of bamboo during particleboard pressing, thereby reducing the macroscopic pore size between the particles in the board. When compared to the original bamboo particleboard, the moisture absorption, 24-h water absorption (at a relative humidity of 50 %), 24-h thickness swelling, and bound water content of the deep carbon bamboo particleboard decreased by 32.28 %, 81.57 %, 67.16 %, and 66.7 %, respectively, while the water contact angle increased by 88.89 %.
期刊：
Industrial Crops and Products,2025年225:120471 ISSN：0926-6690
通讯作者：
Li, XZ
作者机构：
[Lu, Ying; Zhou, Jun; Wang, Yuqing; Li, Xiangzhou; Zhou, Peng; Li, XZ] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.;[Jiang, Zhi] Hunan Prima Drug Res Ctr Co Ltd, Hunan Key Lab Pharmacodynam & Safety Evaluat New D, Changsha 410329, Hunan, Peoples R China.
通讯机构：
[Li, XZ ] C;Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
关键词：
Fir essential oil;Microcapsules;Hydrophobicity;Antifungal;Building materials
摘要：
Natural anti-mildew agents are widely used in wood building materials because of its renewable and environmental protection characteristics. This study innovatively proposed a wood cell cavity to encapsulate plant essential oil for filling wood-based panels, aiming to enhance hydrophobicity and antifungal performance. Essential oil-esterophilic wood microcapsules (EO-EWM) were constructed with the strong natural barrier function of the wood cell walls to encapsulate fir essential oil in the cell cavity. The loading capacity of the essential oil in EO-EWM reached 695.3 mg/g, exhibiting outstanding slow-release properties, with a release rate of 59.9 % after 56 days of simulated release. The release mechanism followed the Fickian diffusion mechanism driven by concentration gradients. During the pressing process of the wood-based panel, the additional amount of EO-EWM was controlled within 30 % to ensure the mechanical properties of the panels. More importantly, the addition of EO-EWM significantly enhanced the self-cleaning capability and hydrophobic performance of the wood-based panels while the risk of mold growth on the panels reduced effectively. Essential oil wood-based panels (EO-WBP) exhibited effective antifungal of 75.0 % against Aspergillus niger and of 83.3 % against Penicillium citrinum . The main mechanism of the anti-mold was that the fir essential oil caused the distortion, shrinkage, and cracking of mycelium, thus inhibiting or killing mold. This study provides an effictive and environmentally friendly strategy for constructing hydrophobic and antifungal properties of wood-based panel for building materials.
Natural anti-mildew agents are widely used in wood building materials because of its renewable and environmental protection characteristics. This study innovatively proposed a wood cell cavity to encapsulate plant essential oil for filling wood-based panels, aiming to enhance hydrophobicity and antifungal performance. Essential oil-esterophilic wood microcapsules (EO-EWM) were constructed with the strong natural barrier function of the wood cell walls to encapsulate fir essential oil in the cell cavity. The loading capacity of the essential oil in EO-EWM reached 695.3 mg/g, exhibiting outstanding slow-release properties, with a release rate of 59.9 % after 56 days of simulated release. The release mechanism followed the Fickian diffusion mechanism driven by concentration gradients. During the pressing process of the wood-based panel, the additional amount of EO-EWM was controlled within 30 % to ensure the mechanical properties of the panels. More importantly, the addition of EO-EWM significantly enhanced the self-cleaning capability and hydrophobic performance of the wood-based panels while the risk of mold growth on the panels reduced effectively. Essential oil wood-based panels (EO-WBP) exhibited effective antifungal of 75.0 % against Aspergillus niger and of 83.3 % against Penicillium citrinum . The main mechanism of the anti-mold was that the fir essential oil caused the distortion, shrinkage, and cracking of mycelium, thus inhibiting or killing mold. This study provides an effictive and environmentally friendly strategy for constructing hydrophobic and antifungal properties of wood-based panel for building materials.
摘要：
Rosa rugosa is an excellent aromatic plant species valued for both essential oil extraction and ornamental applications. This study aimed to evaluate its adaptive responses, bioaccumulation capacity, and production quality under cadmium (Cd) stress, providing insights for phytoremediation and sustainable agriculture. A controlled pot experiment was conducted using two cultivars (R. rugosa 'Zizhi' and its bud mutation R. rugosa 'Baizizhi') subjected to various Cd treatments. Growth parameters and physiological indices, such as antioxidant enzyme activities, chlorophyll content, photosynthesis rates, and floral volatile organic compounds, were systematically analyzed. Cd concentrations ranging from 5 to 50 mg<middle dot>kg(-1) maintained plant growth, but significantly elevated antioxidant activities (SOD + 65.94-300.53%, POD + 37.58-75.06%, CAT + 12.48-12.62%) and chlorophyll content (+20.27-242.79%). In contrast, 400 mg<middle dot>kg(-1) Cd severely inhibited growth, inducing chlorosis and leaf desiccation. Total floral volatiles showed a hormetic response, peaking at 200 mg<middle dot>kg(-1) (+46.08%). Sesquiterpenoids showed greater Cd-responsiveness than monoterpenoids, though core aromatic profiles remained stable. The species exhibited root bioconcentration BAF > 0.1 and limited translocation TF < 1, indicating phytostabilization potential. Despite tolerance up to 400 mg<middle dot>kg(-1), field application is recommended below 50 mg<middle dot>kg(-1)-a threshold exceeding China's soil Cd limits (GB 15618-2018). These findings position it as a dual-purpose crop for ecological restoration and fragrance production in Cd-impacted areas.
摘要：
The potential of thermally insulated wood aerogels in energy-efficient engineering is constrained by their mechanical weakness and inadequate environmental stability. Combining minerals with wood aerogels offers promise for enhancing their multifaceted performance. However, fabricating high-performance wood-based aerogels via organic-inorganic assembly remains challenging due to poor uniformity and weak interfacial bonding. Herein, inspired by diatoms, an ultrastrong and flame-retardant biomimetic polymethylsilsesquioxane-wood aerogel (MSQW) is fabricated by combining a nanoscale heterogeneous assembly strategy with sol-gel process to precisely engineer each level of the hierarchy. Meanwhile, the in situ mineralization of amorphous inorganic oligomers firmly welds the organic-inorganic interface, forming a continuous and homogeneous monolithic structure. The resulting MSQW aerogel exhibits ultrahigh stiffness in the axial direction (Young's modulus of 68.73 ± 3.20 MPa) and withstands over 60% strain at 6.97 MPa in the radial direction, recovering its original shape after stress release, due to its unique structural features. Additionally, the aerogel exhibits an excellent combination of properties, including outstanding fire resistance ( peak heat release rate of 91.13 kW/m(2)), hydrophobicity (water contact angle of 137.3°), and degradability. These advanced properties make MSQW an ideal material for thermal insulation in harsh environments.
关键词：
Circadian lighting;Multi-channel spectral sensors;Spectral power distribution;Machine learning
摘要：
Light has an undeniable impact on the human body, as it can to some extent affect hormone secretion and emotional changes. Spectral power distribution (SPD) is the main indicator for evaluating the quality of light sources, but traditional spectral measurement equipment is bulky and expensive, and cannot be widely used in our daily life. In order to fill this gap, this article designs a low-cost and small lighting measurement device for measuring the circadian lighting, which obtains spectral data from 8 channels in the visible light range through multi-channel spectral sensors. Machine learning methods are used to reconstruct the SPD of 81 wavelength data points, thereby improving the accuracy of designed measurement device. This device can simultaneously achieve real-time measurement of SPD and real-time monitoring of circadian related parameters, and return circadian related parameters (such as circadian action factor, melanopic efficacy of luminous radiation, equivalent melanopic lux, etc.). Results have found that the error of circadian parameters measured by this equipment is less than 5%.
Light has an undeniable impact on the human body, as it can to some extent affect hormone secretion and emotional changes. Spectral power distribution (SPD) is the main indicator for evaluating the quality of light sources, but traditional spectral measurement equipment is bulky and expensive, and cannot be widely used in our daily life. In order to fill this gap, this article designs a low-cost and small lighting measurement device for measuring the circadian lighting, which obtains spectral data from 8 channels in the visible light range through multi-channel spectral sensors. Machine learning methods are used to reconstruct the SPD of 81 wavelength data points, thereby improving the accuracy of designed measurement device. This device can simultaneously achieve real-time measurement of SPD and real-time monitoring of circadian related parameters, and return circadian related parameters (such as circadian action factor, melanopic efficacy of luminous radiation, equivalent melanopic lux, etc.). Results have found that the error of circadian parameters measured by this equipment is less than 5%.
摘要：
High-performance catalyst is significant for the sustainable hydrogen (H 2 ) production by electrocatalytic water splitting. Optimizing porous structure and active groups of substrate can promote the interaction of substrate and active metal particles, enabling excellent catalytic properties and stability. Herein, the optimization strategy of delignification and 2,2,6,6-tetramethylpyperidine-1-oxyl (TEMPO) oxidization was developed to modify the porous structure and active groups of wood substrate, and Ru doped Co/Co 2 P (Ru-Co/Co 2 P) nanoparticles were encapsulated into the optimized wood carbon substrate (Ru-Co/Co 2 P@TDCW) for the efficient pH-universal hydrogen evolution reaction (HER). The nanopore and carboxyl groups were produced by delignification and TEMPO oxidation, which accelerated the dispersion and deposition of Ru-Co/Co 2 P nanoparticles. The RuCo alloy and RuCoP nanoparticles were produced with the doping of Ru, and more Ru-Co/Co 2 P nanoparticles were anchored by the delignified and TEMPO oxidized wood carbon (TDCW). As anticipated, the Ru-Co/Co 2 P@TDCW catalyst exhibited excellent pH-universal HER activity, and only 16.6, 93, and 43 mV of overpotentials were required to deliver the current density of 50 mA cm −2 in alkaline, neutral, and acidic electrolytes, outperforming the noble Pt/C/TDCW catalyst significantly. In addition, Ru-Co/Co 2 P@TDCW catalyst presented excellent stability for more than 600 h working at 100 mA cm −2 in alkaline solution (1.0 M KOH). Density function theory (DFT) results revealed that energy barriers for the dissociation of H 2 O and the formation of H 2 were decreased by the doping of Ru, and the conductivity and efficiency of electron migration were also enhanced. This work demonstrated a strategy to optimize the structure and properties of wood carbon substrate, providing a promising strategy to synthesize high-efficiency catalyst for H 2 production.
High-performance catalyst is significant for the sustainable hydrogen (H 2 ) production by electrocatalytic water splitting. Optimizing porous structure and active groups of substrate can promote the interaction of substrate and active metal particles, enabling excellent catalytic properties and stability. Herein, the optimization strategy of delignification and 2,2,6,6-tetramethylpyperidine-1-oxyl (TEMPO) oxidization was developed to modify the porous structure and active groups of wood substrate, and Ru doped Co/Co 2 P (Ru-Co/Co 2 P) nanoparticles were encapsulated into the optimized wood carbon substrate (Ru-Co/Co 2 P@TDCW) for the efficient pH-universal hydrogen evolution reaction (HER). The nanopore and carboxyl groups were produced by delignification and TEMPO oxidation, which accelerated the dispersion and deposition of Ru-Co/Co 2 P nanoparticles. The RuCo alloy and RuCoP nanoparticles were produced with the doping of Ru, and more Ru-Co/Co 2 P nanoparticles were anchored by the delignified and TEMPO oxidized wood carbon (TDCW). As anticipated, the Ru-Co/Co 2 P@TDCW catalyst exhibited excellent pH-universal HER activity, and only 16.6, 93, and 43 mV of overpotentials were required to deliver the current density of 50 mA cm −2 in alkaline, neutral, and acidic electrolytes, outperforming the noble Pt/C/TDCW catalyst significantly. In addition, Ru-Co/Co 2 P@TDCW catalyst presented excellent stability for more than 600 h working at 100 mA cm −2 in alkaline solution (1.0 M KOH). Density function theory (DFT) results revealed that energy barriers for the dissociation of H 2 O and the formation of H 2 were decreased by the doping of Ru, and the conductivity and efficiency of electron migration were also enhanced. This work demonstrated a strategy to optimize the structure and properties of wood carbon substrate, providing a promising strategy to synthesize high-efficiency catalyst for H 2 production.
摘要：
To investigate the enhancing effect of basalt fiber reinforced polymer (BFRP) layers on the load-bearing capacity of test specimens, both experimental and theoretical investigations were carried out on the compressive behavior of BFRP composite wood winding columns. In this paper, sylvestris pine was used as the primary material, which was manually wrapped with BFRP cloth to form cylindrical thin-walled specimens. Six groups of specimens were set up with the number of BFRP layers as the main variable, 4 specimens in each group and 24 specimens in total. The compressive properties of six groups were tested at a rate of 1 mm/min using a displacement-controlled method. The test results showed that the load carrying capacity of the specimen rose with the increase of the number of BFRP layers. Based on the damage, the specimens were classified into two modes of failure: layer bundle crushing and overall buckling which accounted for 33.3 % and 66.7 % of the total number of specimens, respectively. Based on the continuous strength method, the compressive strength prediction formula of BFRP composite wood winding columns was proposed, and the theoretical and practical results coincided well, which proved that this method had good application value in practice.
To investigate the enhancing effect of basalt fiber reinforced polymer (BFRP) layers on the load-bearing capacity of test specimens, both experimental and theoretical investigations were carried out on the compressive behavior of BFRP composite wood winding columns. In this paper, sylvestris pine was used as the primary material, which was manually wrapped with BFRP cloth to form cylindrical thin-walled specimens. Six groups of specimens were set up with the number of BFRP layers as the main variable, 4 specimens in each group and 24 specimens in total. The compressive properties of six groups were tested at a rate of 1 mm/min using a displacement-controlled method. The test results showed that the load carrying capacity of the specimen rose with the increase of the number of BFRP layers. Based on the damage, the specimens were classified into two modes of failure: layer bundle crushing and overall buckling which accounted for 33.3 % and 66.7 % of the total number of specimens, respectively. Based on the continuous strength method, the compressive strength prediction formula of BFRP composite wood winding columns was proposed, and the theoretical and practical results coincided well, which proved that this method had good application value in practice.
