In order to reduce environmental pollution and regulatory issues, the adsorption of n-butane from vehicle exhaust is one of the necessary requirements. When active carbon was mixed with different proportions of metal oxides, the adsorption capacity of n-butane was markedly improved. Infrared spectroscopy data provided information on functional groups derived from activated carbon composite metal oxide indicating that one of the best adsorption capacities for n-butane was obtained by mixing 3 g TiO2, 2.7 g CuO, and 2.1 g NaBO3·4H2O with 30 g activated carbon. However,...
