Photocatalytic activity enhancing for titanium dioxide by co-doping with bromine and chlorine

被引：361

作者：

Luo, HM

Takata, T

Lee, YG

Zhao, JF

Domen, K

Yan, YS ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

[2] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

CHEMISTRY OF MATERIALS | 2004年 / 16卷 / 05期

关键词：

D O I：

10.1021/cm035090w

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：

Bromine and chlorine co-doped nanocrystalline titanium dioxide are synthesized by a hydrothermal method using titanium chloride in a mixed hydrobromic acid-ethanol system. TiO2 with anatase, mixed anatase/rutile, rutile, mixed rutile/brookite, mixed anatase/rutile/ brookite, and rutile phases are obtained, in that order, by increasing the acidity through addition of HBr. Br- and Cl- co-doping causes the absorption edge of TiO2 to shift to a lower energy region. The photocatalytic activity of doped TiO2 with mixed anatase/rutile phases exceeds that of commercial TiO2 photocatalyst Degussa P-25 for water splitting into H-2 and O-2 under ullraviolet light.

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页码：846 / 849

页数：4

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