首页|Construction of ZnO@CDs@Co3O4 sandwich heterostructure with multi-interfacial electron-transfer toward enhanced photocatalytic CO2 reduction
Construction of ZnO@CDs@Co3O4 sandwich heterostructure with multi-interfacial electron-transfer toward enhanced photocatalytic CO2 reduction
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Photocatalytic conversion of CO2 into small-molecule chemical feedstocks can meet the growing de-mand for energy and alleviate the global warming.Herein,a p-n ZnO@CDs@Co3O4 heterojunction with sandwich structure was constructed by calcination method of self-assembled ZIF-8@CDs@ZIF-67.The ZnO@CDs@Co3O4 with well-defined interfacial structure exhibited the significantly enhanced photocat-alytic CO2 reduction activity,and the optimal catalyst indicated the(CO+CH4)evolution rate of 214.53μmol g-1 h-1 under simulated solar light,which was superior to ZnO,Co3O4 and binary ZnO@Co3O4.The internal cavity,exposed active sites,multiple interfaces and constructed p-n heterojunction can fa-cilitate the light harvesting and photoexcited electron transfer.Besides,after introduction of CDs placed in the middle layer between ZnO and Co3O4,CDs with excellent photoelectric property further promoted charge separation and migration.This work represents an appealing strategy to construct well-defined photocatalysts for boosting CO2 photoreduction.
Metal-organic frameworkPhotocatalytic CO2 reductionCarbon dotsp-n heterojunctionSandwich heterostructure
Xiuzheng Deng、Yi Ke、Jiawen Ding、Yingtang Zhou、Hui Huang、Qian Liang、Zhenhui Kang
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Advanced Catalysis and Green Manufacturing Collaborative Innovation Center,CNPC-CZU Innovation Alliance,School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China
Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control,National Engineering Research Center for Marine Aquaculture,Marine Science and Technology College,Zhejiang Ocean University,Zhoushan 316004,China
Institute of Functional Nano & Soft Materials(FUNSOM),Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices,Soochow University,Suzhou 215123,China
国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Qinglan Project Foundation of Jiangsu ProvinceZhejiang Province Key Research and Development Project
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