Abstract
AbstractIn this study, copper/zinc oxide/graphite nitrogen carbide (Cu/ZnO/g‐C3N4) is prepared using a hydrothermal method and applied as a photocatalyst for CO2 photoreduction. The morphology and structural properties of the obtained Cu/ZnO/g‐C3N4 are systematically characterized through X‐ray powder diffraction, ultraviolet–visible absorption spectroscopy, transmission electronic microscopy, and photoluminescence spectroscopy. A 3 wt% Cu/ZnO/g‐C3N4 photocatalyst exhibits high CH4 (40.7 μmol g−1 hr−1), CO (65.1 μmol g−1 hr−1), and CH3OH (92.5 μmol g−1 hr−1) production rates, which are 38.3, 77.1, and 58.1 fold higher than the pure g‐C3N4. The production rate is higher than those for bulk g‐C3N4 and ZnO/g‐C3N4. Finally, the reaction mechanism of Cu/ZnO/C3N4 is proposed in this study.
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