Decomposition of water by a CaTiO3 photocatalyst under UV light irradiation

被引：123

作者：

Mizoguchi, H

Ueda, K

Orita, M

Moon, SC

Kajihara, K

Hirano, M

Hosono, H

机构：

[1] ERATO, JST, Hosono Transparent Electro Act Mat, Takatsu Ku, Kawasaki, Kanagawa 2130012, Japan

[2] Tokyo Inst Technol, Mat & Struct Lab, Yokohama, Kanagawa 2268503, Japan

[3] Res Inst Innovat Technol Earth, Kyoto 6190292, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 15期

关键词：

electrochemical measurements; catalytic properties;

D O I：

10.1016/S0025-5408(02)00974-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Platinized CaTiO3 powder (band gap 3.5 eV) had a high photocatalytic activity of decomposing posing water into H-2 and O-2 under the irradiation of UV light, especially with photon energies above 3.8 eV. The existence of this photocatalytic activity is further supported on electrochemical grounds in that the photoinduced current spectrum measured between a CaTiO3 single crystal and a Pt electrode without applied voltage in water showed a maximum near 4.1 eV This result indicates that the direct measurement of the spectrum corresponding to the efficiency of water decomposition is an effective method to survey photocatalytic activities of materials. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：2401 / 2406

页数：6

共 11 条

[1] Photocatalytic H2 evolution under visible light irradiation on Ni-doped ZnS photocatalyst [J].