Highly dispersed pt nanoparticles on nitrogen-doped magnetic carbon nanoparticles and their enhanced activity for methanol oxidation

被引：102

作者：

Choi, Baeck

Yoon, Hyeonseok

Park, In-Su

Jang, Jyongsik

Sung, Yung-Eun ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, Res Ctr Energy Convers & Storage, Seoul 151744, South Korea

[3] Seoul Natl Univ, Hyperstruct Organ Mat Res Ctr, Seoul 151742, South Korea

来源：

CARBON | 2007年 / 45卷 / 13期

关键词：

D O I：

10.1016/j.carbon.2007.08.028

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 ; 081704 ;

摘要：

Pt nanoparticles dispersed nitrogen-doped magnetic carbon nanoparticles (N-MCNPs) were prepared by chemical method, conventional sodium borohydride reduction. Then, those probable applications were evaluated for a support material comparing with Vulcan XC-72 for polymer electrolyte membrane fuel cell. N-MCNPs-supported Pt nanoparticles show a better activity of methanol oxidation reaction compared to Vulcan XC-72-supported one in terms of both mass and electrochemical surface area (ESA) normalized current density. In particular, Pt/N-MCNPs show more enhanced activity based on the mass normalized specific activity rather than ESA normalized activity. For investigation of physical characterizations of Pt/N-MCNPs, and Pt/Vulcan XC-72, X-ray diffraction (XRD), high resolution-transmission electron microscopy (HR-TEM), and X-ray photoelectron spectroscopy (XPS) likes various experiments were performed. Especially, to identify the role of nitrogen in the N-MCNPs for Pt nanoparticles dispersion, specific investigation of N Is XP spectra with peak deconvolution were performed on N-MCNPs support material of the before and after chemical reduction of Pt nanoparticles. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2496 / 2501

页数：6

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