Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 114, Issue 14, Pages 6472-6477Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp9101866
Keywords
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Funding
- National Natural Science Foundation of China [20925725, 50972070]
- National Basic Research Program of China [2007CB613303]
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BiTaO4 photocatalyst lot methylene blue (MB) degradation, which worked under visible-light irradiation, was systematically investigated or the (list tune. BiTaO4 possess similar degradation ability of TiO2-xNx under visible-light irradiation (lambda > 420 nm) Density functional calculations revealed that Bi 6s orbitals contributed to the formation of valence band, resulting in narrowing the band gap Moreover, comparing with BiNbO4, we found BiTaO4 showed photocorrosion suppression performance during the photocatalytic process. The differences in the photocorrosion suppression between BiTaO4 and BiNbO4 could be attributed to the conduction curvature and bandwidth, leading to differences in the mobility of photogenerated electrons formed in the conduction bands, which mainly consisted of Ta 5d and Nb 4d orbitals, respectively
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