Synthesis of PtPd Bimetal Nanocrystals with Controllable Shape, Composition, and Their Tunable Catalytic Properties

被引：221

作者：

Huang, Xiaoqing ^{[1
]}

Li, Yujing ^{[1
]}

Li, Yongjia ^{[1
]}

Zhou, Hailong ^{[2
]}

Duan, Xiangfeng ^{[2
,3
]}

Huang, Yu ^{[1
,3
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

来源：

NANO LETTERS | 2012年 / 12卷 / 08期

关键词：

Shape control; composition control; platinum; palladium; alloy; hydrogenation; PLATINUM NANOCRYSTALS; OXYGEN REDUCTION; ELECTROCATALYTIC ACTIVITY; PYRROLE HYDROGENATION; FACILE SYNTHESIS; ONE-POT; NANOPARTICLES; NANOCUBES; GROWTH; SHELL;

D O I：

10.1021/nl301931m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a facile synthetic strategy to single-crystalline PtPd nanocrystals with controllable shapes and tunable compositions. In the developed synthesis, the molar ratio of the starting precursors determines the composition in the final PtPd nanocrystals, while the halides function as the shape-directing agent to induce the formation of PtPd nanocrystals with cubic or octahedral/tetrahedral morphology. These obtained PtPd nanocrystals exhibit high activity in the hydrogenation of nitrobenzene, and their performance is highly shape- and composition-dependent with Pt in similar to 50% showing the optimum activity and the {100}-facet-enclosed PtPd nanocrystals demonstrating a higher activity than the {111}-facet-bounded PtPd nanocrystals.

引用

页码：4265 / 4270

页数：6

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