Abstract
Photocatalytic oxidation technology is a promising green technology for degrading volatile organic compounds(VOCs)due to its non-toxic,environmentally friendly,energy-saving and affordable char-acteristics.In this paper,Ag/TiO2@PANI-MC with high stability and activity was synthesized by the mechanochemical method.The designed Ag/TiO2@PANI-MC were of high specific surface area,light absorption capacity and low recombination rate of electron-hole pairs,which was demonstrated by various characterizations.When applied in photocatalytic toluene oxidation,the conversion is 17％at 20 ℃ under 100 W high-pressure mercury lamp.This photocatalytic performance is with less temper-ature sensitivity and significantly improved compared with Ag/TiO2 or TiO2 catalysts.Furthermore,the reaction routine was also confirmed by gas chromatography-mass spectrometry and toluene was mineralized to CO2.More importantly,the Ag/TiO2@PANI-MC indicated good reusability after three cy-cles,which was verified by the Fourier transform-infrared spectroscopy comparison with fresh and used catalysts.Our work proves a potential way of constructing nanocomposites based on mechanochemical synthesis for enhanced toluene photocatalytic degradation.
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