期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 2, 期 3, 页码 353-358出版社
AMER CHEMICAL SOC
DOI: 10.1021/sc4004295
关键词
Photocatalysis; Carbon nitride; CO2; Cobalt; CO
资金
- National Basic Research Program of China [2013CB632405]
- National Natural Science Foundation of China [21033003, 21173043]
- State Key Laboratory of NBC Protection for Civilian [SKLNBC2013-04K]
- Specialized Research Fund for the Doctoral Program of Higher Education [20133514110003]
The combination of cobalt redox catalysis and carbon nitride photocatalysis to construct a cascade photoreaction system has been developed for the deoxygenative reduction of CO2 to CO with visible light. The graphitic carbon nitride has been demonstrated to function both as a capture/activation substrate of CO2 and a photocatalyst, whereas the introduced cobalt species act as reductive and oxidative promoters to accelerate charge-carrier separation and transfer kinetics. This hybrid photosystem contains inexpensive substances that synergetically catalyze CO2-to-CO conversion at mild conditions, with a high stability of catalysts. The optimization in the surface and texture structures as well as reaction conditions has been demonstrated. The results represent an important step toward artificial photosynthesis by using cost-acceptable materials.
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