Volume 53, Issue 46 pp. 12522-12527
Communication

Synthesis of Pt–Ni Alloy Nanocrystals with High-Index Facets and Enhanced Electrocatalytic Properties

Xiling Xu

Xiling Xu

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

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Prof. Dr. Xin Zhang

Corresponding Author

Prof. Dr. Xin Zhang

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

Xin Zhang, State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

Shi-Gang Sun, State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China)

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Dr. Hui Sun

Dr. Hui Sun

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

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Dr. Ying Yang

Dr. Ying Yang

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

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Prof. Dr. Xiaoping Dai

Prof. Dr. Xiaoping Dai

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

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Prof. Dr. Jinsen Gao

Prof. Dr. Jinsen Gao

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

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Xueyong Li

Xueyong Li

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

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Pengfang Zhang

Pengfang Zhang

State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

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Hong-Hui Wang

Hong-Hui Wang

State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China)

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Neng-Fei Yu

Neng-Fei Yu

State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China)

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Prof. Dr. Shi-Gang Sun

Corresponding Author

Prof. Dr. Shi-Gang Sun

State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China)

Xin Zhang, State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249 (China)

Shi-Gang Sun, State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005 (China)

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First published: 04 September 2014
Citations: 182

We thank the National Natural Science Foundation of China (No. 20903119, 21173269, 21321062, and 91127040) and the Ministry of Science and Technology of China (No. 2011BAK15B05).

Graphical Abstract

In good shape: By varying the amount of glycine present, the shape of Pt–Ni alloy nanocrystals could be tuned from concave nanocubes (CNCs) to nanocubes and hexoctahedra (HOHs; see picture). Glycine was used to manipulate the nucleation and growth rates of the Pt–Ni alloy NCs for the formation of CNCs by self-assembly and HOHs by control of crystal growth. Pt–Ni CNCs and HOHs showed excellent electrocatalytic properties. PVP=polyvinylpyrrolidone.

Abstract

The shape-controlled synthesis of multicomponent metal nanocrystals (NCs) bounded by high-index facets (HIFs) is of significant importance in the design and synthesis of high-activity catalysts. We report herein the preparation of Pt–Ni alloy NCs by tuning their shape from concave-nanocubic (CNC) to nanocubic and hexoctahedral (HOH). Owing to the synergy of the HIFs and the electronic effect of the Pt–Ni alloy, the as-prepared CNC and HOH Pt–Ni alloy NCs exhibited excellent catalytic properties for the electrooxidation of methanol and formic acid, as well as for the oxygen reduction reaction (ORR).

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