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

作     者：Pengtao Qiu Shaomin Lian Guang Yang Shengchun Yang 

作者机构：School of Science Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics State Key Laboratory for Mechanical Behavior of Materials Xi'an 2iaotong University Xi'an 710049 China Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education & International Center for Dielectric Research Xi' an Jiaotong University Xi'an 710049 China Collaborative Innovation Center of Suzhou Nano Science and Technology Suzhou Academy of Xi'an Jiaotong University Suzhou 215000 China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2017年第10卷第3期

页      面：1064-1077页

核心收录：

学科分类：07[理学] 

基　　金：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) 

主　　题：noble metalmesoporous single crystal hollow interior electrocatalysis 

摘      要：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 F 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.