Electrocatalytic reduction of dioxygen at cetyltrimethylammonium bromide modified carbon paste electrode

被引：9

作者：

He, Q ^{[1
]}

Hu, CG ^{[1
]}

Dang, XP ^{[1
]}

Wei, YL ^{[1
]}

Hua, SS ^{[1
]}

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

来源：

ELECTROCHEMISTRY | 2004年 / 72卷 / 01期

关键词：

dioxygen reduction; cetyltrimethylammonium bromide; carbon paste electrodes;

D O I：

10.5796/electrochemistry.72.5

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A cetyltrimethylammonium bromide modified carbon paste electrode (CTAB/CPE) was developed. The modification was based on the hydrophobic adsorption of CTAB on the surface of CPE. This electrode exhibited excellent catalytic activity toward the reduction of dioxygen (O-2). Compared with the poor signals at bare CPE, O-2 had much larger reduction current and more positive peak potential at CTAB/CPE, which may arise from the formation of a positively charged layer of CTAB on the surface of CPE. The effects of some parameters on the O-2 reduction were examined, including electrolyte pH, amount of modifier, scan rate and composition of carbon paste. The preparation of this electrode not only produced a new chemically modified carbon paste electrode but also provided a useful sensor for the determination of O-2.

引用

页码：5 / 8

页数：4

共 21 条

[1] RING-DISK ELECTRODE STUDY OF REDUCTION OF OXYGEN ON ACTIVE-CARBON IN ALKALINE-SOLUTION [J].