(95g) Adsorption combined photocatalytic ability of g-C3N4/Bi2WO6/activated carbon fiber for toluene removal

A series of g-C3N4/Bi2WO6 catalysts with different loads were prepared by one-step hydrothermal method, and g-C3N4/Bi2WO6/ACF composite photocatalysts were synthesized by dipping the photocatalysts uniformly onto ACF. The effects of Bi2WO6/ACF loading capacity, toluene concentration, light intensity and wavelength on toluene removal rate were investigated respectively. The results show that 40% g-C3N4/Bi2WO6 photocatalyst prepared by water thermal method is evenly covered on ACF, forming a thin film and no agglomeration is produced. The combination of g-C3N4 and Bi2WO6 can improve the response of Bi2WO6 in visible light region, and thereby improve the photocatalytic performance. When the concentration of toluene is about 500mg/m3 and the light intensity is 24w, 40% mol g-C3N4/Bi2WO6/ACF has the best removal effect of gas phase toluene, and the removal rate can reach 58.1%, which is 1.83 times that of monomer Bi2WO6.