In situ chemical fabrication of polyaniline/multi-walled carbon nanotubes composites as supports of Pt for methanol electrooxidation

被引:0
|
作者
YiTing Xu
SuJuan Lin
XiaoLiang Peng
Wei-Ang Luo
Jean-Yves Gal
LiZong Dai
机构
[1] Xiamen University,Department of Materials Science and Engineering, College of Materials
[2] Universite Montpellier II,UMR Laboratoire Hydrosciences, Maison des Sciences de l’Eau de Montpellie
来源
Science China Chemistry | 2010年 / 53卷
关键词
polyaniline; multi-walled carbon nanotubes; polymerization; methanol electrooxidation;
D O I
暂无
中图分类号
学科分类号
摘要
In this study, platinum (Pt)-polyaniline(PANI)/MWNTs catalysts were synthesized by two sequential reactions. First, core-shell structural PANI/MWNTs composites were fabricated by in-situ chemical oxidation polymerization, in which MWNTs act as the core and PANI as the shell. Then, Pt particles were deposited on the PANI/MWNTs composites by a chemical reduction method. The morphology and constitution of the products were characterized by FT IR, scanning electron microscopy, transmission electron microscopy and XRD. It was observed that the Pt particles were smaller in size and more uniformly distributed on these composite supports than those on the reference, pure MWNT supports. XRD results showed higher Pt(111) content in the catalyst deposited on PANI/MWNTs supports than that on MWNTs. The cyclic voltammeter (CV) tests demonstrated that the electrode modified by Pt-PANI/MWNTs ternary composite catalyst showed a higher catalytic stability than Pt-MWNT binary catalyst did, due to the synergic interaction between Pt and the composite support.
引用
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页码:2006 / 2014
页数:8
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