期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：189
期号：3
页码：032056
DOI：10.1088/1755-1315/189/3/032056
语种：English
出版社：IOP Publishing
摘要：The electronic structure, photocatalytic properties and mechanism of Cu2O with different Co-doped concentrations in visible light region are studied by first-principles calculation. The results show that intrinsic Cu2O shows semiconductor characteristics, and the Co doped Cu2O with 4.17% and 8.33% doping concentrations show metallic properties. The light absorption of Cu2O in the visible region increases with the Co doping, and the photocatalytic efficiency enhances with increasing doping concentration. By analyzing the density of states, it is found that the enhanced light absorption of the two doped systems in the visible range is mainly caused by the intraband transition of Co 3d state electrons. The results found an effective way to improve the photocatalytic efficiency of Cu2O in the visible region and promote the application of Cu2O in photocatalysis.
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