Electrocrystallized Ag nanoparticle on functional multi-walled carbon nanotube surfaces for hydrazine oxidation

被引：141

作者：

Gao, Guoyu ^{[1
]}

Guo, Daojun ^{[1
]}

Wang, Ce ^{[1
]}

Li, Hulin ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 07期

基金：

中国国家自然科学基金;

关键词：

4-aminobenzoic acid; MWNTs; Ag nanoparticles; hydrazine;

D O I：

10.1016/j.elecom.2007.02.026

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

4-Aminobenzoic acid was covalently grafted on multi-walled carbon nanotubes (MWNTs) by amine cation radical formation in the electrooxidation process of the amino-containing compound. Then, silver (Ag) nanoparticles were electrocrystallized on 4-aminobenzoic acid monolayer-grafted MWNTs by a potential-step method. The structure and nature of the resulting Ag/MWNT composites were characterized by transmission electron microscopy and X-ray diffraction. The electrocatalytic properties of the Ag/MWNT electrode for hydrazine oxidation have been investigated by cyclic voltammetry, high electrocatalytic activity of the Ag/MWNT electrode can be observed. This may be attributed to the small particle size of the silver particles. The results imply that the Ag/MWNT composites have a good application potential in fuel cells. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1582 / 1586

页数：5

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