Abstract
Petroleum pitch-based graphene oxide (GO) was prepared by using petroleum pitch as carbon source, and GO/WO3 composite catalyst was prepared by hydrothermal synthesis. At the same time, the performance of GO/WO3 photocatalytic reduction of CO2 to produce renewable hydrocarbon fuel was studied. The results showed that the introduction of GO promoted the absorption of visible light, enhanced the adsorption performance of CO2 in the catalyst surface, improved the separation efficiency of photogenerated electron hole pairs and made the protons produced by water decomposition more involved in the reduction reaction of CO2, thus greatly enhancing the efficiency of CO produced by Photocatalytic reduction of CO2. The yields of CO and H2 were 151.8[Formula: see text][Formula: see text]mol[Formula: see text]g[Formula: see text] cat[Formula: see text] h[Formula: see text] and 46.3[Formula: see text][Formula: see text]mol[Formula: see text]g[Formula: see text] cat[Formula: see text] h[Formula: see text], which were about three times and two times of pure WO3 under the same conditions.
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