Studies of electrochemical reduction of dioxygen with RRDE

被引：24

作者：

Wang, Fang

Hu, Shengshui ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

[2] Chinese Acad Sci, State Key Lab Transducer Technol, Beijing 100080, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2006年 / 51卷 / 20期

关键词：

dioxygen; carbon nanotubes; dihexadecyl hydrogen phosphate (DHP); glassy carbon electrode (GCE); rotate ring-disk electrode (RRDE);

D O I：

10.1016/j.electacta.2005.11.042

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical behaviors of dioxygen (O-2) were studied by using rotate ring-disk electrode (RRDE) and other bare glassy carbon electrode (GCE) and single-waited carbon nanotubes (SWNTs)-dihexadecyl hydrogen phosphate (DHP) film modified GCE. The results showed that the electrochemical reduction of dioxygen was considered to proceed by a two-step two-electron reduction pathway at both bare GCE and SWNTs-DHP film modified GCE in 0.1 mol/L air-saturated sodium hydroxide (NaOH). Maybe because each reaction rate for two cases was different the cyclic voltammograms measurements exhibited different behaviors. The detection of ring current confirmed the presence of middle product hydrogen peroxide (H2O2). Furthermore, larger current and more positive reduction potential indicated that SWNTs showed a catalytic effect towards the electrochemical reduction of dioxygen. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：4228 / 4235

页数：8

共 39 条

[31] Electrocatalytic oxidation of nitric oxide at multi-walled carbon nanotubes modified electrode [J].