Effect of Preparation Condition of Ti Film and Experimental Condition on C Reduction Performance of Ti Photocatalyst Membrane Reactor

Abstract

It was previously reported that CO2could be reduced into CO, CH4, and so forth, which can be used as fuels, by TiO2as the photocatalyst under UV radiation. To increase the concentration of fuel and improve CO2reduction performance on TiO2photocatalyst, a membrane reactor composed of TiO2and gas separation membrane prepared by sol-gel and dip-coating method has been built. Factors such as rising speed (RS) in the dip-coating process and the timing and amount of water injected in the membrane reactor in CO2reduction experiment have been investigated. As a result, the largest amount of TiO2film is obtained for  mm/s among various RS conditions investigated in this study. According to CO2reduction experiment by gas circulation type reactor, too much water which cannot be consumed in CO2reduction process would not help improving the CO2reduction performance.