Platinum nanoparticles on porphyrin functionalized graphene nanosheets as a superior catalyst for methanol electrooxidation

被引：66

作者：

Wang, Rui-Xiang ^{[1
]}

Fan, Jing-Jing ^{[1
]}

Fan, You-Jun ^{[1
]}

Zhong, Jing-Ping ^{[1
]}

Wang, Li ^{[1
,2
]}

Sun, Shi-Gang ^{[2
]}

Shen, Xing-Can ^{[1
]}

机构：

[1] Guangxi Normal Univ, Coll Chem & Pharmaceut Sci, Key Lab Chem & Mol Engn Med Resources, Minist Educ China, Guilin 541004, Peoples R China

[2] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

来源：

NANOSCALE | 2014年 / 6卷 / 24期

基金：

中国国家自然科学基金;

关键词：

WALLED CARBON NANOTUBES; ELECTROCATALYTIC OXIDATION; FACILE SYNTHESIS; GRAPHITE OXIDE; PTRU CATALYSTS; THIN-FILMS; REDUCTION; PERFORMANCE; SUPPORT; METAL;

D O I：

10.1039/c4nr04140b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel nanostructured catalyst of platinum nanoparticles supported on 5,10,15,20-tetrakis(1-methyl-4-pyridinio) porphyrin tetra(p-toluenesulfonate) (TMPyP) functionalized graphene (TMPyP-graphene) is synthesized by the hydrothermal polyol process. The as-synthesized nanocomposites are characterized by Fourier transform infrared (FTIR) spectroscopy, UV-vis absorption spectroscopy, Raman spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemical tests. It has been found that Pt nanoparticles of ca. 3.4 nm are uniformly dispersed on the surface of TMPyP-graphene, and hold a high electrochemical active surface area (ECSA) of 126.2 m(2) g(-1). The results demonstrate that the Pt/TMPyP-graphene catalyst exhibits a much higher electrocatalytic activity and stability than the Pt/graphene and commercial Pt/C catalysts for methanol oxidation, which is of significant importance in improving the efficiency of Pt-based electrocatalysts for DMFCs applications.

引用

页码：14999 / 15007

页数：9

共 65 条

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