作者：
Su, Jiahui;Yang, Yadong;Wan, Caichao*;Li, Xingong;Chai, Yaling;...
期刊：
研究(英文),2024年7:0317 ISSN：2096-5168
通讯作者：
Wan, Caichao;Wu, YQ;Wan, CC
作者机构：
[Yang, Yadong; Li, Xingong; Wu, Yiqiang; Yuan, Jianzhong; Wan, Caichao; Chai, Huayun; Su, Jiahui; Wan, CC; Chai, Yaling] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.;[Wan, Caichao; Wan, CC] Yihua Lifestyle Technol Co Ltd, Shantou 515834, Peoples R China.
通讯机构：
[Wu, YQ ; Wan, CC] C;[Wan, CC ] Y;Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.;Yihua Lifestyle Technol Co Ltd, Shantou 515834, Peoples R China.
摘要：
Silica glass, known for its brittleness, weight, and non-biodegradable nature, faces challenges in finding suitable alternatives. Transparent wood, made by infusing polymers into wood, shows promise but is hindered by limited availability of wood in China and fire risks associated with its use. This study explores the potential of utilizing bamboo, which has a shorter growth cycle, as a valuable resource for developing flame-retardant, smoke-suppressing, and superhydrophobic transparent bamboo. A 3-layered flame-retardant barrier, composed of a top silane layer, an intermediate layer of SiO(2) formed through hydrolysis-condensation of Na(2)SiO(3) on the surface, and an inner layer of Na(2)SiO(3), has been confirmed to be effective in reducing heat release, slowing flame spread, and inhibiting the release of combustible volatiles, toxic smoke, and CO. Compared to natural bamboo and other congeneric transparent products, the transparent bamboo displays remarkable superiority, with the majority of parameters being notably lower by an entire order of magnitude. It achieves a long ignition time of 116 s, low total heat release (0.7 MJ/m(2)), low total smoke production (0.063 m(2)), and low peak CO concentration (0.008 kg/kg). Moreover, when used as a substrate for perovskite solar cells, the transparent bamboo displays the potential to act as a light management layer, leading to a marked efficiency enhancement of 15.29%. The excellent features of transparent bamboo make it an enticing choice for future advancements in flame-retardant glasses and optical devices.
作者机构：
[Li, Xingong; Wei, Song; Wu, Yiqiang; Cheng, Wenjie; Wan, Caichao; Chai, Huayun; Su, Jiahui; Wan, CC] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.
通讯机构：
[Wu, YQ ; Wan, CC] C;Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.
摘要：
Traditional electrode materials still face vital challenges of few active sites, low porosity, complex synthesis process, and low specific capacitance. Herein, N-doped and 3D hierarchical porous graphene nanofoam (N-GNF) is created on car-bon fibers (CFs) by employing a facile, fast, and environmentally friendly strategy of N-2 plasma activation. After an appropriated N-2 plasma activation, the graphene nanosheets (GNSs) synthesized by Ar/CH4 plasma deposition transform into N-GNF successfully. N doping donates rich active sites and increases the hydro-philia, while hierarchical nanoarchitecture exposes an enlarged effective contact area at the interface between electrode and electrolyte and affords sufficient space for accommodating more electrolytes. The as-assembled flexible N-GNF@CFs//Zn NSs@CFs Zn ion capacitor delivered a high energy density of 105.2 Wh kg(-1) at 378.6 W kg(-1) and initial capacity retention of 87.9% at the current of 2 A g(-1) after a long cycle of 10,000.
摘要：
Carbon materials are effective substitutes for Pt counter electrodes (CEs) in dye-sensitized solar cells (DSSCs). However, many of these materials, such as carbon nanotubes and graphene, are expensive and require complex preparation process. Herein, waste lignin, recycled from hazardous black liquors, is used to create oxygen-nitrogen-sulfur codoped carbon microspheres for use in DSSC CEs through the facile process of low-temperature preoxidation and high-temperature self-activation. The large number of ester bonds formed by preoxidation increase the degree of cross-linking of the lignin chains, leading to the formation of highly disordered carbon with ample defect sites during pyrolysis. The presence of organic O/N/S components in the waste lignin results in high O/N/S doping of the pyrolysed carbon, which increases the electrolyte ion adsorption and accelerates the electron transfer at the CE/electrolyte interface, as confirmed by density functional theory (DFT) calculations. The presence of inorganic impurities enables the construction of a hierarchical micropore-rich carbon structure through the etching effect during self-activation, which can provide abundant catalytically active sites for the reversible adsorption/desorption of electrolyte ions. Under these synergistic effects, the DSSCs that use this novel carbon CE achieve a quite high power-conversion efficiency of 9.22%. To the best of our knowl-edge, the value is a new record reported so far for biomass-carbon-based DSSCs. Crown Copyright & COPY; 2023 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
作者机构：
[Li, Xingong; Yin, Canbin] Cent South Univ Forestry & Technol, Coll Mat Sci & Engn, Changsha 410004, Peoples R China.;[Yin, Canbin] Hunan City Univ, Yiyang 413000, Peoples R China.
通讯机构：
[Xingong Li] C;College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China
摘要：
Bamboo contains water-soluble saccharides and carboxylic acid which have an anticoagulation effect on Portland cement; the anticoagulation ingredients can directly influence the adaptability of the Portland cement and bamboo shavings and finally influence the mechanical properties of bamboo Portland cement particle board. In order to improve the adaptability of bamboo and the Portland cement, bamboo shavings are pretreated with 1% NaOH solution, 2% NaOH solution, or 3% NaOH solution. High-performance liquid chromatography is adopted to analyze the influences of treatment based on different concentrations of NaOH solutions on the content of water-soluble saccharides and carboxylic acid in the bamboo shavings, and a Fourier infrared spectrometer and an X-ray diffractometer are utilized to analyze the characteristic peak changes and crystallization property changes, respectively, of the chemical ingredients of the bamboo shavings before and after the three types of pretreatment. This paper discusses the effects of treatment based on different concentrations of NaOH solutions in eliminating water-soluble saccharides and carboxylic acid in the bamboo shavings, details the preparation of bamboo Portland cement particle board by use of the bamboo shavings before and after pretreatment, and reports the influences and mechanisms of NaOH pretreatment on properties of the bamboo Portland cement particle board. Research indicates that the mechanical properties of the Portland cement particle board prepared from bamboo shavings treated with 3% NaOH solution exceed the requirements of qualified products and superior products specified in the Standard GB/T24312-2009.
作者机构：
[夏琪琪; 朱凌波; 李新功; 郑霞] College of Material Science and Engineering, Central South University of Forestry & Technology, Changsha;410000, China;[夏琪琪; 朱凌波; 李新功; 郑霞] 410000, China
通讯机构：
[Li, X.] C;College of Material Science and Engineering, Central South University of Forestry & Technology, Changsha, China
作者机构：
[郑霞; 黄清华; 贺正国; 李新功; 高歌] Academy of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, 410000, China;[谢向荣] Green Construction Technology Group New Building Materials High-Tech Co., Ltd, Changsha, 410000, China
通讯机构：
[Li, X.] A;Academy of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, China
作者机构：
[李文豪; 吴义强; 李萍; 李新功; 左迎峰] College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha;410004, China;[李文豪; 吴义强; 李萍; 李新功; 左迎峰] 410004, China
通讯机构：
[Zuo, Y.] C;College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, China
作者机构：
[朱凌波; 李新功; 杨凯; 张晓凤; 卢立] School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha;410000, China;[朱凌波; 李新功; 杨凯; 张晓凤; 卢立] 410000, China
通讯机构：
[Li, X.] S;School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha, China
