SrTiO3-WO3 photocatalysis systems with an energy storage ability

被引：24

作者：

Ohko, Y

Saitoh, S

Tatsuma, T

Fujishima, A

机构：

[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan

[2] Univ Tokyo, Dept Appl Chem, Sch Engn, Bunkyo Ku, Tokyo 1138656, Japan

[3] Koyo Elect Construct Co Ltd, Utsunomiya, Tochigi 3200061, Japan

来源：

ELECTROCHEMISTRY | 2002年 / 70卷 / 06期

关键词：

SrTiO3-WO3; photocatalyst; reductive energy storage; photoelectrochemical anti-corrosion effect; photoelectrochemical oxygen reduction;

D O I：

10.5796/electrochemistry.70.460

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

SrTiO3 photocatalyst was combined with an energy storage material, WO3, to fabricate a new photocatalysis system, envisaging application to, e.g., protection of metals from corrosion. The SrTiO3-WO3 composite system stores reductive energy under UV irradiation, as does the TiO2-WO3 system. Since SrTiO3 exhibits more negative photopotential (ca. - 0.5 V vs Ag \ AgCl) than TiO2 (ca. -0.4 V), the SrTiO3-WO3 system can be charged more rapidly. In addition, self-discharging of the SrTiO3-WO3 system on the basis of aerobic re-oxidation of the system is slower than that of the TiO2-WO3 system.

引用

页码：460 / 462

页数：3

共 13 条

[1]

AKASHI M, 1995, FUSHOKU BOSHOKU KOEN, P55

[2]

Fijushima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2

[3]

Finklea H. O., 1988, Semiconductor Electrodes, P43

[4] SEMICONDUCTOR ELECTRODES .2. ELECTROCHEMISTRY AT N-TYPE TIO2 ELECTRODES IN ACETONITRILE SOLUTIONS [J].