"Green" electrochemical synthesis of Pt/graphene sheet nanocomposite film and its electrocatalytic property

被引：197

作者：

Liu, Sheng ^{[1
,2
]}

Wang, Jinqing ^{[1
]}

Zeng, Jing ^{[3
]}

Ou, Junfei ^{[1
,2
]}

Li, Zhangpeng ^{[1
,2
]}

Liu, Xiaohong ^{[1
]}

Yang, Shengrong ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

[3] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Pt/graphene nanocomposite film; Electrophoretic deposition; Electrochemical synthesis; Methanol oxidation; Fuel cell; GRAPHITE-OXIDE; ELECTROPHORETIC DEPOSITION; GRAPHENE; REDUCTION; OXIDATION;

D O I：

10.1016/j.jpowsour.2010.02.024

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：

Nanocomposite films of platinum nanoparticle-deposited expandable graphene sheet (Pt/EGS) are fabricated on conductive indium tin oxide glass electrodes via a "green" electrochemical synthetic route involving a series of electrochemical processes. The microstructure and morphology of the prepared film samples are characterized by Fourier transform infrared spectroscopy. Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, three-dimensional non-contact surface mapping, and field emission scanning electron microscopy. At the same time, the catalytic activity and stability of the Pt/EGS film for the oxidation of methanol are evaluated through cyclic voltammetry and chronoamperometry tests. The Pt nanoparticles in the Pt/EGS nanocomposite film are found to be uniformly distributed on the EGS. The as-synthesized Pt/EGS nanocomposite exhibits high catalytic activity and good stability for the oxidation of methanol, which may be attributed to its excellent electrical conductivity and the high specific surface area of the graphene sheet catalyst support. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：4628 / 4633

页数：6

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