Visible-Light Photocatalytic Degradation of BiTaO4 Photocatalyst and Mechanism of Photocorrosion Suppression

被引：116

作者：

Shi, Rui ^{[1
]}

Lin, Jie ^{[1
]}

Wang, Yajun ^{[1
]}

Xu, Jing ^{[1
]}

Zhu, Yongfa ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 14期

基金：

中国国家自然科学基金;

关键词：

BAND-STRUCTURE; BITA1-XNBXO4; 0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1; PHOTOELECTROCHEMICAL PROPERTIES; PHOTOPHYSICAL PROPERTIES; NANOSIZED BI2WO6; H-2; EVOLUTION; RHODAMINE-B; IRRADIATION; DECOMPOSITION; ENERGY;

D O I：

10.1021/jp9101866

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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

引用

页码：6472 / 6477

页数：6

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