Issue 2, 2009
From the journal:

Energy & Environmental Science

CNx nanofibers converted from polypyrrole nanowires as platinum support for methanol oxidation†

Yanwen Ma,ab   Shujuan Jiang,a   Guoqiang Jian,a   Haisheng Tao,a   Leshu Yu,a   Xuebin Wang,a   Xizhang Wang,a   Jianmin Zhu,c   Zheng Hu*a  and  Yi Chena  

* Corresponding authors

a Key Laboratory of Mesoscopic Chemistry of MOE and Jiangsu Provincial Lab for Nanotechnology, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China
E-mail: zhenghu@nju.edu.cn
Fax: +86 25-83686251
Tel: +86 25-83686015

b Jiangsu Key Lab for Organic Electronics and Information Displays, Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing, China

c National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, China

Abstract

A new kind of carbon nitride (CNx) nanofiber has been prepared by the calcination of polypyrrole nanowires at 800 °C. The product maintained a wire-like morphology during calcination, and the pyrrolic nitrogen in the polypyrrole nanowires gradually changed to pyridinic and graphitic nitrogen as annealing temperature increased. These CNx nanofibers, prepared at 800 °C, have a nitrogen concentration of about 10%. Pt nanoparticles with average size of ∼3 nm could therefore be easily immobilized onto the CNx nanofibers because of the inherent chemical activity arising from the nitrogen incorporation. The Pt/CNx composite catalyst thus obtained has a large electrochemically active area and gives good electrocatalytic performance for methanol oxidation, both in activity and stability, suggesting it has potential application in fuel cells.

Graphical abstract: CNx nanofibers converted from polypyrrole nanowires as platinum support for methanol oxidation

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Article information

DOI
https://doi.org/10.1039/B807213M
Article type
Paper
Submitted
28 Apr 2008
Accepted
13 Nov 2008
First published
18 Dec 2008

Energy Environ. Sci., 2009,2, 224-229

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CNx nanofibers converted from polypyrrole nanowires as platinum support for methanol oxidation

Y. Ma, S. Jiang, G. Jian, H. Tao, L. Yu, X. Wang, X. Wang, J. Zhu, Z. Hu and Y. Chen, Energy Environ. Sci., 2009, 2, 224 DOI: 10.1039/B807213M

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