PHOTOELECTROCHEMISTRY OF TIO2 PARTICLES - EFFICIENT ELECTRON-TRANSFER FROM THE TIO2 PARTICLES TO A REDOX ENZYME

被引：24

作者：

CAI, R ^{[1
]}

BABA, R ^{[1
]}

HASHIMOTO, K ^{[1
]}

KUBOTA, Y ^{[1
]}

FUJISHIMA, A ^{[1
]}

机构：

[1] YOKOHAMA CITY UNIV,FAC MED,KANAZAWA KU,YOKOHAMA 236,JAPAN

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1993年 / 360卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(93)87016-O

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Electron transfer from photoexcited TiO2 particles to dissolved oxygen (O2), and then to an active center of superoxide dismutase (SOD), was investigated by a slurry electrode technique. As a result of electron transfer, the superoxide anion (O2-) was formed initially, and was then further converted effectively into H2O2 by SOD catalysis. At a constant applied potential of 0.6 V (vs. SCE), an increase in photocurrent resulting from oxidation of O2- and H2O2 on a SnO2 working electrode was observed. However, such an increase in photocurrent decreased, rapidly on the addition of catalase, which is a scavenger of H2O2.

引用

页码：237 / 245

页数：9

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