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Nano Research 2017, 10(3): 1064-1077 https://doi.org/10.1007/s12274-016-1367-4
Research Article | Issue | Published: 23 December 2016

Halide ion-induced formation of single crystalline mesoporous PtPd bimetallic nanoparticles with hollow interiors for electrochemical methanol and ethanol oxidation reaction

Show Author's Information Pengtao Qiu1,  Shaomin Lian1,  Guang Yang2,  Shengchun Yang1,3( )
School of Science, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic PhysicsState Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong UniversityXi'an710049China
Electronic Materials Research LaboratoryKey Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong UniversityXi'an710049China
Collaborative Innovation Center of Suzhou Nano Science and TechnologySuzhou Academy of Xi'an Jiaotong UniversitySuzhou215000China
Keywords:
electrocatalysis, mesoporous, single crystal, noble metal, hollow interior
Cite this article:
Qiu P, Lian S, Yang G, et al. Halide ion-induced formation of single crystalline mesoporous PtPd bimetallic nanoparticles with hollow interiors for electrochemical methanol and ethanol oxidation reaction. Nano Research, 2017, 10(3): 1064-1077. https://doi.org/10.1007/s12274-016-1367-4
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Abstract Full text Electronic supplementary material About this article

We demonstrate a facile hydrothermal one-pot synthesis method for producing single crystalline mesoporous PtPd bimetallic nanoparticles with a hollow interior and porous surface structure in the presence of Br- and I- ions. The formation process analysis indicated that the coexistence of Br- and I- ions is responsible for the formation of the novel bimetallic nanoparticles. The changes in the reduction potential of Pt and Pd metal ions achieved by the coordination with different halide ions resulted in the formation of hollow interiors as a galvanic reaction between Pd2+ and Pt4+ ions occurred. In addition, the size of the mesoporous PtPd nanoparticles can be well controlled by slightly changing the amount of I- ions used. The electrochemical tests indicated that the as- synthesized single crystalline mesoporous PtPd hollow nanoparticles exhibited enhanced catalytic properties toward methanol and ethanol oxidation reactions as compared with the commercial Pt black and Pt/C materials.


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Electronic supplementary material
About this article

Halide ion-induced formation of single crystalline mesoporous PtPd bimetallic nanoparticles with hollow interiors for electrochemical methanol and ethanol oxidation reaction

Show Author's information Pengtao Qiu1, Shaomin Lian1, Guang Yang2, Shengchun Yang1,3( )
School of Science, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic PhysicsState Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong UniversityXi'an710049China
Electronic Materials Research LaboratoryKey Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong UniversityXi'an710049China
Collaborative Innovation Center of Suzhou Nano Science and TechnologySuzhou Academy of Xi'an Jiaotong UniversitySuzhou215000China

Abstract

We demonstrate a facile hydrothermal one-pot synthesis method for producing single crystalline mesoporous PtPd bimetallic nanoparticles with a hollow interior and porous surface structure in the presence of Br- and I- ions. The formation process analysis indicated that the coexistence of Br- and I- ions is responsible for the formation of the novel bimetallic nanoparticles. The changes in the reduction potential of Pt and Pd metal ions achieved by the coordination with different halide ions resulted in the formation of hollow interiors as a galvanic reaction between Pd2+ and Pt4+ ions occurred. In addition, the size of the mesoporous PtPd nanoparticles can be well controlled by slightly changing the amount of I- ions used. The electrochemical tests indicated that the as- synthesized single crystalline mesoporous PtPd hollow nanoparticles exhibited enhanced catalytic properties toward methanol and ethanol oxidation reactions as compared with the commercial Pt black and Pt/C materials.

Keywords: electrocatalysis, mesoporous, single crystal, noble metal, hollow interior

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Publication history
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Acknowledgements

Publication history

Received: 26 September 2016
Revised: 09 November 2016
Accepted: 11 November 2016
Published: 23 December 2016
Issue date: March 2017

Copyright

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016

Acknowledgements

Acknowledgements

We thank Dr. Chuansheng Ma from the International Center for Dielectric Research, Xi'an Jiaotong University, for their support with HRTEM, Xiaojing Zhang and Liqun Wang from the School of Science, Xi'an Jiaotong University, for their support of TEM and SEM characterizations. This work is supported by National Natural Science Foundation of China (No. 51271135), the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, the Fundamental Research Funds for the Central Universities, and the Natural Science Foundation of Shanxi Province (No. 2015JM5166).

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