Synthesis of graphene-supported monodisperse AuPd bimetallic nanoparticles for electrochemical oxidation of methanol

doi:10.1088/1674-1056/24/7/078109

中国物理B ›› 2015, Vol. 24 ›› Issue (7): 78109-078109.doi: 10.1088/1674-1056/24/7/078109

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Synthesis of graphene-supported monodisperse AuPd bimetallic nanoparticles for electrochemical oxidation of methanol

肖红君^{a b}, 申承民^{a b}, 时雪钊^a, 杨苏东^a, 田园^{a b}, 林少雄^a, 高鸿钧^{a b}

a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
b University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2015-05-03 修回日期:2015-05-11 出版日期:2015-07-05 发布日期:2015-07-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61335006) and the National Basic Research Program of China (Grant No. 2013CBA01603).

Synthesis of graphene-supported monodisperse AuPd bimetallic nanoparticles for electrochemical oxidation of methanol

Xiao Hong-Jun (肖红君)^{a b}, Shen Cheng-Min (申承民)^{a b}, Shi Xue-Zhao (时雪钊)^a, Yang Su-Dong (杨苏东)^a, Tian Yuan (田园)^{a b}, Lin Shao-Xiong (林少雄)^a, Gao Hong-Jun (高鸿钧)^{a b}

a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
b University of Chinese Academy of Sciences, Beijing 100049, China

Received:2015-05-03 Revised:2015-05-11 Online:2015-07-05 Published:2015-07-05
Contact: Gao Hong-Jun E-mail:hjgao@iphy.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61335006) and the National Basic Research Program of China (Grant No. 2013CBA01603).

摘要/Abstract

摘要：

Monodisperse AuPd bimetallic nanoparticles (NPs) with different compositions are synthesized by using oleylamine (OAm) as reducing reagent, stabilizer, and solvent. To obtain AuPd solid solution NPs, Pd–OAm and Au–OAm precursors are firstly prepared by mixing OAm with Palladium (II) acetylacetonate (Pd(acac)₂) and HAuCl₄, respectively. Then Pd–OAm and Au–OAm precursor solutions are injected into a hot oleylamine solution to form AuPd NPs. The size of these NPs ranges from 6.0 to 8.0 nm and the composition is controlled by varying the precursor ratio. The AuPd NPs are loaded onto reduced graphene oxide (RGO) sheets to make catalysts. Alloy NPs show high electrocatalytic activity and stability toward methanol oxidation in the alkaline media. Their catalytic activity for methanol oxidation is found to be dependent on the NP composition. As the Pd component increases, the peak current densities during the forward scan gradually increase and reach the maximum at AuPd₂. The enhancement of alloy NPs for methanol oxidation can be attributed to a synergistic effect of Au and Pd on the surface of alloy NPs.

关键词: AuPd alloy nanoparticles, reduced graphene oxide, methanol oxidation

Abstract:

Key words: AuPd alloy nanoparticles, reduced graphene oxide, methanol oxidation

中图分类号: (Nanoscale materials and structures: fabrication and characterization)

81.07.-b

82.47.-a (Applied electrochemistry) 88.30.M- (Fuel cell component materials)

肖红君, 申承民, 时雪钊, 杨苏东, 田园, 林少雄, 高鸿钧. Synthesis of graphene-supported monodisperse AuPd bimetallic nanoparticles for electrochemical oxidation of methanol[J]. 中国物理B, 2015, 24(7): 78109-078109.

Xiao Hong-Jun (肖红君), Shen Cheng-Min (申承民), Shi Xue-Zhao (时雪钊), Yang Su-Dong (杨苏东), Tian Yuan (田园), Lin Shao-Xiong (林少雄), Gao Hong-Jun (高鸿钧). Synthesis of graphene-supported monodisperse AuPd bimetallic nanoparticles for electrochemical oxidation of methanol[J]. Chin. Phys. B, 2015, 24(7): 78109-078109.

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Synthesis of graphene-supported monodisperse AuPd bimetallic nanoparticles for electrochemical oxidation of methanol

Synthesis of graphene-supported monodisperse AuPd bimetallic nanoparticles for electrochemical oxidation of methanol

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