Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (11): 2117-2123.doi: 10.3866/PKU.WHXB201509181

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

One-Step Synthesis of Reduced Graphene Oxide supported Pt Nanoparticles and Its Electrocatalytic Activity for Methanol Oxidation

Hai-Li. GAO1,2,*(),Xiao-Long. LI1,Wei. HE1,Rui-Ting. GUO1,Bo. CHAI1   

  1. 1 Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, P. R. China
    2 Henan Provincial Key Laboratory of Surface Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450001, P. R. China
  • Received:2015-05-08 Published:2015-11-13
  • Contact: Hai-Li. GAO E-mail:gaohaili@zzuli.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(U1404201);National Training Programs of Innovation andEntrepreneurship for Undergraduates(201310462099);Foundation for Young Core Teacher by Zhengzhou University of Light Industry, China(2013XGGJS007);Research Foundation of Education Bureau of Henan Province, China(13A530362);Doctoral Foundation of ZhengzhouUniversity of Light Industry, China(2011BSJJ020)

Abstract:

In this study, graphite oxide was prepared from natural graphite powder using a modified Hummers method. Well-dispersed Pt nanoparticles were synthesized on reduced graphene oxide (RGO) via a simple one-step chemical reduction method in ethylene glycol (EG) by simultaneous reduction of graphene oxide (GO) and chloroplatinic acid. The microstructure, composition, and morphology of the synthesized materials were characterized with Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and transmission electron microscopy (TEM). It is shown that the GO was reduced to RGO, and the Pt nanoparticles with an average particle size of 2.3 nm were well dispersed on the surface of RGO. The catalytic performance of the catalysts for methanol oxidation was investigated by cyclic voltammetry and amperometric method, which indicated that Pt/RGO catalyst had higher electrocatalytic activity and stability for the oxidation of methanol than the Pt/C and Pt/CNT catalysts. The If/Ib of Pt/RGO reached 1.3, which was 2.2 and 1.9 times as high as those of Pt/C and Pt/CNT catalysts, respectively, revealing that Pt/RGO had high poisoning tolerance to the COad intermediate species produced in the methanol oxidation reaction.

Key words: Pt nanoparticle, Graphene, Chemical reduction, Methanol oxidation, Poisoning tolerance

MSC2000: 

  • O646