Controllable Deposition of Platinum Nanoparticles on Graphene As an Electrocatalyst for Direct Methanol Fuel Cells

被引：320

作者：

Qiu, Jian-Ding ^{[1
]}

Wang, Guo-Chong ^{[1
]}

Liang, Ru-Ping ^{[1
]}

Xia, Xing-Hua ^{[2
]}

Yu, Hong-Wen ^{[3
]}

机构：

[1] Nanchang Univ, Dept Chem, Nanchang 330031, Peoples R China

[2] Nanjing Univ, Key Lab Analyt Chem Life Sci, Sch Chem & Chem Engn, Nanjing 210093, Peoples R China

[3] Hokkaido Univ, Creat Res Inst, Nano Industrializat Lab, Sapporo, Hokkaido 0010021, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 31期

基金：

中国国家自然科学基金;

关键词：

CARBON NANOTUBES; FACILE SYNTHESIS; BIMETALLIC NANODENDRITES; FUNCTIONALIZED GRAPHENE; SUPERCRITICAL-FLUID; OXIDATION; NANOSTRUCTURES; PERFORMANCE; REDUCTION; GRAPHITE;

D O I：

10.1021/jp200580u

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：

Platinum nanoparticles (Pt NPs) with uniform size and high dispersion have been successfully assembled on poly(diallyldimethylammonium chloride) functionalized graphene oxide via a sodium borohydride reduction process. The loading concentration of Pt NPs on graphene can be adjusted in the range of 18-78 wt %. The obtained Pt/graphene nanocomposites are characterized by transmission electron microscopy, high resolution transmission electron microscopy, energy dispersive spectra metry, X-ray diffraction, and thermogravimetric analysis. The results show that the Pt NPs with sizes of approximate 4.6 nm uniformly disperse on graphene surface for all Pt loading densities. Electrochemical studies reveal that the Pt/graphene nanocomposites with electrochemically active surface area of 141.6 m(2)/g show excellent electrocatalytic activity toward methanol oxidation and oxygen reduction. The present method is promising for the synthesis of high performance catalysts for fuel cells, gas phase catalysis, and sensors.

引用

页码：15639 / 15645

页数：7

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