Controlled Synthesis of Pt Nanowires with Ordered Large Mesopores for Methanol Oxidation Reaction

被引：28

作者：

Zhang, Chengwei ^{[1
,2
]}

Xu, Lianbin ^{[1
]}

Yan, Yushan ^{[3
]}

Chen, Jianfeng ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China

[2] Hebei Univ Technol, Tianjin Key Lab Mat Laminating Fabricat & Interfa, Tianjin 300130, Peoples R China

[3] Univ Delaware, Dept Chem & Biomol Engn, Newark, DE 19716 USA

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

中国国家自然科学基金;

关键词：

SMALL ORGANIC-MOLECULES; SULFUR-DOPED GRAPHENE; PLATINUM NANOSPHERES; CATALYTIC-PROPERTIES; NANOTUBES; ELECTROCATALYSTS; NANOPARTICLES; GROWTH; ARRAYS; ELECTROOXIDATION;

D O I：

10.1038/srep31440

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Catalysts for methanol oxidation reaction (MOR) are at the heart of key green-energy fuel cell technology. Nanostructured Pt materials are the most popular and effective catalysts for MOR. Controlling the morphology and structure of Pt nanomaterials can provide opportunities to greatly increase their activity and stability. Ordered nanoporous Pt nanowires with controlled large mesopores (15, 30 and 45 nm) are facilely fabricated by chemical reduction deposition from dual templates using porous anodic aluminum oxide (AAO) membranes with silica nanospheres self-assembled in the channels. The prepared mesoporous Pt nanowires are highly active and stable electrocatalysts for MOR. The mesoporous Pt nanowires with 15 nm mesopores exhibit a large electrochemically active surface area (ECSA, 40.5 m(2) g(-1)), a high mass activity (398 mA mg(-1)) and specific activity (0.98 mA cm(-2)), and a good I-f/I-b ratio (1.15), better than the other mesoporous Pt nanowires and the commercial Pt black catalyst.

引用

页数：8

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