Highly dispersed Ag nanoparticles on functional MWNT surfaces for methanol oxidation in alkaline solution

被引：320

作者：

Guo, DJ ^{[1
]}

Li, HL ^{[1
]}

机构：

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

来源：

CARBON | 2005年 / 43卷 / 06期

关键词：

carbon nanotubes; catalyst support; electrochemical properties;

D O I：

10.1016/j.carbon.2004.12.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

Silver (Ag) nanoparticles were electrocrystallized on 4-aminobenzene monolayer-grafted multi-walled carbon nanotubes (MWNTs) by a potential-step method. The structure and nature of the resulting Ag/MWNT composite were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD), the results show that the electrochemically synthesized Ag nanoparticles were homogeneously dispersed and well-separated from one another on the modified MWNT surfaces. The electrocatalytic properties of the Ag/MWNT electrode for oxidation of methanol in alkaline Solution have been investigated by cyclic voltammetry (CV), and excellent electrocatalytic activity was 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 ill fuel cells. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1259 / 1264

页数：6

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