Excavated Cubic Platinum-Tin Alloy Nanocrystals Constructed from Ultrathin Nanosheets with Enhanced Electrocatalytic Activity

被引：112

作者：

Chen, Qiaoli ^{[1
]}

Yang, Yanan ^{[1
]}

Cao, Zhenming ^{[1
]}

Kuang, Qin ^{[1
]}

Du, Guifen ^{[1
]}

Jiang, Yaqi ^{[1
]}

Xie, Zhaoxiong ^{[1
]}

Zheng, Lansun ^{[1
]}

机构：

[1] Xiamen Univ, Coll Chem & Chem Engn, Collaborat Innovat Ctr Chem Energy Mat, State Key Lab Phys Chem Solid Surfaces,Dept Chem, Xiamen 361005, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 31期

基金：

中国国家自然科学基金;

关键词：

alloys; electrocatalysis; nanocrystals; platinum; tin; HIGH-INDEX FACETS; NOBLE-METAL NANOCRYSTALS; REDUCTION KINETICS; PTSN/C CATALYSTS; NANOPARTICLES; SHAPE; PVP; ELECTROOXIDATION; NANOFRAMES; SIZE;

D O I：

10.1002/anie.201602592

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Excavated polyhedral noble-metal materials that were built by the orderly assembly of ultrathin nanosheets have both large surface areas and well-defined facets, and therefore could be promising candidates for diverse important applications. In this work, excavated cubic Pt-Sn alloy nanocrystals (NCs) with {110} facets were constructed from twelve nanosheets by a simple co-reduction method with the assistance of the surface regulator polyvinylpyrrolidone. The specific surface area of the excavated cubic Pt-Sn NCs is comparable to that of commercial Pt black despite their larger particle size. The excavated cubic Pt-Sn NCs exhibited superior electrocatalytic activity in terms of both the specific area current density and the mass current density towards methanol oxidation.

引用

页码：9021 / 9025

页数：5

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