Plasmonic semiconductor nanomaterials have excellent light absorption ability.However,their surfaces lack active sites,resulting in low CO2 photoconversion efficiency.We successfully synthesized Cu-loaded MoO3-x(Cu/MoO3-x) nanosheets with oxygen vacancy by hydrothermal method.The composites exhibited plasmonic absorption in the visible region.Under ultraviolet-visible light irradiation,the 6%Cu/MoO3-x showed an enhanced CH4 production rate of 4.78μmol/(g·h)(82.7% selectivity) in pure water,which was 12.9 times that of MoO3-x[CH4 production rate of 0.37μmol/(g·h)].The introduction of oxygen vacancies and Cu provided active sites for CO2 adsorption and activation,thereby promoting the photocatalytic reduction of CO2 to CH4.
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基金资助
中国海洋石油集团有限公司“十四五”重大科技项目CCUS专项课题(KJGG-2022-12-CCUS-030500);中国博士后科学基金资助项目(2024M763152)
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