Rapid Synthesis of Pt/Carbon Nanometer Catalyst by Microwave Irradiation and Its Electrocatalytic Activity for Electrooxidation of Methanol

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (12): 2285.

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Rapid Synthesis of Pt/Carbon Nanometer Catalyst by Microwave Irradiation and Its Electrocatalytic Activity for Electrooxidation of Methanol

CHEN Wei-Xiang^1,2, HAN Gui¹, LEE Jim-Yang^2,3,4, LIU Zhao-Lin⁴

1. Department of Chemistry, Zhejiang University, Hangzhou 310027, China;
2. Singapore-MIT Alliance, National University of Singapore, Singapore 117576;
3. Department of Chemical and Environmental Engineering, National University of Singapore, Singapore 119260;
4. Institute of Materials Research and Engineering of Singapore, Singapore 117602

Received:2003-06-27 Online:2003-12-24 Published:2003-12-24

Abstract

Abstract: As a rapid uniform and efficient heating method, microwave irradiation has been widely used in chemical reaction and preparing nanomaterials. Here Pt/carbon nanotube(CNT) catalysts with w(Pt)=18.1% and 9.4 % were rapidly synthesized by microwave irradiation heating polyol process and employing the ethylene glycol solution of H₂PtCl₆as the precursors in the presence of CNT support. TEM imaging showed that microwave-prepared Pt nanoparticles were very uniform in size, with an average size of 3.1 nm, and uniformly dispersed on the CNT surface. Electrochemical experiments demonstrated that microwave-synthesized Pt/CNT catalysts exhibited a higher catalytic activity for electrooxidation of liquid methanol than E-TEK Pt/C. The significant improvement in catalyst performance derives from that microwave-synthesized Pt nanoparticles have a uniform small particle size and uniforml dispersion on the CNT surface.

Key words: Microwave, Pt nanoparticles, Carbon nanotubes, Catalyst, Fuel cell

CLC Number:

O646

TrendMD:

CHEN Wei-Xiang, HAN Gui, LEE Jim-Yang, LIU Zhao-Lin . Rapid Synthesis of Pt/Carbon Nanometer Catalyst by Microwave Irradiation and Its Electrocatalytic Activity for Electrooxidation of Methanol[J]. Chem. J. Chinese Universities, 2003, 24(12): 2285.

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Rapid Synthesis of Pt/Carbon Nanometer Catalyst by Microwave Irradiation and Its Electrocatalytic Activity for Electrooxidation of Methanol

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