One-step synthesis of ultrathin PtxPb nerve-like nanowires as robust catalysts for enhanced methanol electrooxidation

被引：91
作者：
Huang, Liang [1 ,2 ]
Han, Yujie [1 ,2 ]
Zhang, Xueping [1 ,2 ]
Fang, Youxing [1 ]
Dong, Shaojun [1 ,2 ]
机构：
[1] Chinese Acad Sci, State Key Lab Electroanalyt Chem, Changchun Inst Appl Chem, Changchun 130023, Jilin, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
NANOSCALE | 2017年 / 9卷 / 01期
基金：
中国国家自然科学基金;
关键词：
FORMIC-ACID OXIDATION; FUEL-CELL APPLICATIONS; OXYGEN REDUCTION; ELECTROCATALYTIC ACTIVITY; MEDIATED SYNTHESIS; PLATINUM; PD; NANOPARTICLES; NANOCRYSTALS; ALLOY;
D O I：
10.1039/c6nr07036a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Ultrathin PtxPb nerve-like nanowires (NNWs) with a diameter of only around 3.6 nm were synthesized by a one-step wet-chemical strategy, and they served as robust catalysts for greatly enhancing methanol electrooxidation both under acidic and alkaline conditions. Due to the high CO-poisoning tolerance, superior electrocatalytic activity and stability endowed by the Pt-Pb alloyed composition and the unique structure, the Pt3.5Pb NNWs showed the highest specific activity of 2.78 mA cm(-2) in acidic media and 6.51 mA cm(-2) in alkaline media toward the methanol oxidation reaction (MOR), which are 5.24 and 4.12 times higher than those of the commercial Pt/C catalysts, respectively. Meanwhile, the demonstrated synthetic strategy for Pt-Pb nanocrystals may stimulate more inspiration and strategies of the novel metal-based nanocrystals for promising applications in electrocatalysis.
引用
收藏
页码：201 / 207
页数：7
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