Ionic liquid-assisted synthesis of reduced graphene oxide–supported hollow spherical PtCu alloy and its enhanced electrocatalytic activity toward methanol oxidation

  • Wanyi Duan
  • Aoqi Li
  • Yujuan Chen
  • Kelei ZhuoEmail author
  • Jianming Liu
  • Jianji WangEmail author
Research Paper


In this work, a facile one-pot solvothermal method is developed for fabricating hollow spherical PtCu alloy nanoparticles (with the size of 124 ± 16 nm) supported on reduced graphene oxide (PtCu/rGO), with the assistance of 1-decyl-3-methylimidazolium bromide ([C10MIm]Br) as the structure-directing agent and capping agent. The influence of various experimental parameters on the morphology and structure of prepared PtCu/rGO hybrids is researched. Compared with the commercial Pt/C (10 wt%) and Pt/rGO, the as-prepared PtCu/rGO hybrid exhibits a larger electrochemical active surface area, higher electrocatalytic activity, and better tolerance for methanol oxidation in acidic media. We believe that the hollow spherical PtCu alloy supported on rGO will have great potential applications for direct methanol fuel cells.

Graphical abstract

Hollow spherical PtCu alloy supported on rGO hybrid is successfully synthesized by a facile one-pot solvothermal method with the assistance of 1-decyl-3-methylimidazolium bromide. 1-Decyl-3-methylimidazolium bromide acts as both shape-controlled agent and capping agent for synthesizing PtCu/rGO. The as-prepared PtCu/rGO exhibits high electrocatalytic activity and good poisoning-resistant ability for methanol oxidation in acidic media.


Hollow spherical nanoparticles Platinum-copper alloy Nanostructured catalysts 1-Decyl-3-methylimidazolium bromide Methanol oxidation Graphene 


Funding information

Financial support from the National Natural Science Foundation of China (Nos. 21573058, 21303044, 21173070) and the Program for Innovative Research Team in Science and Technology in University of Henan Province (15IRTSTHN 003, 17IRTSTHN 001) are gratefully acknowledged.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

11051_2018_4400_MOESM1_ESM.docx (8.2 mb)
ESM 1 (DOCX 8348 kb)


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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiangPeople’s Republic of China

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