Tuning the Shape and Catalytic Activity of Fe Nanocrystals from Rhombic Dodecahedra and Tetragonal Bipyramids to Cubes by Electrochemistry

被引：87

作者：

Chen, Yan-Xin ^{[1
]}

Chen, Sheng-Pei ^{[1
]}

Zhou, Zhi-You ^{[1
]}

Tian, Na ^{[1
]}

Jiang, Yan-Xia ^{[1
]}

Sun, Shi-Gang ^{[1
]}

Ding, Yong ^{[2
]}

Wang, Zhong Lin ^{[2
]}

机构：

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

[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 31期

关键词：

PLATINUM NANOCRYSTALS; SURFACE SCIENCE; NANOPARTICLES; REDUCTION; GOLD;

D O I：

10.1021/ja904225q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Fe nanocrystal catalysts were synthesized by electrochemistry. Shape transformations of Fe nanocrystals from rhombic dodecahedra and tetragonal bipyramids, both bounded by {110} facets, to 18-facet polyhedra enclosed by different combinations of {101} and {100} facets and finally to cubes exclusively covered by {100} facets have been achieved. A study of the surface-structure functionality of the Fe nanocrystats toward electroreduction of nitrite revealed that the etectrocatalytic activity of the Fe nanocrystats increases as the fraction of {100} facets on the surface of the Fe NCs increases.

引用

页码：10860 / +

页数：4

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