Promoted dissociative adsorption of hydrogen peroxide and persulfate ions and electrochemical oscillations - Caused by a catalytic effect of adsorbed bromine

被引：12

作者：

Nakanishi, S ^{[1
]}

Sakai, S ^{[1
]}

Hatou, M ^{[1
]}

Fukami, K ^{[1
]}

Nakato, Y ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Chem, Osaka 5608531, Japan

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2003年 / 150卷 / 01期

关键词：

D O I：

10.1149/1.1526112

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Adsorbed bromine on Pt and Au electrodes acts as a catalyst for dissociative adsorption of H2O2 and S2O8-2, similar to adsorbed OH (and adsorbed iodine). This fact is revealed by analyses of newly found negative differential resistances and electrochemical oscillations, appearing in a potential region where the surface coverage of adsorbed bromine (theta(Br)) decreases steeply. The present result further supports the generality of a catalytic effect of adsorbed electronegative species such as OH, Br, and I on the dissociative adsorption of peroxides such as H2O2 and S2O8-2. (C) 2002 The Electrochemical Society.

引用

页码：E47 / E51

页数：5

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