Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (7): 1267-1273.doi: 10.3866/PKU.WHXB201405052

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Synthesis and Electrocatalytic Properties of Pt Nanoparticles on Nitrogen-Doped Reduced Graphene Oxide for Methanol Oxidation

WANG Li1, MA Jun-Hong1,2   

  1. 1. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. China;
    2. Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, P. R. China
  • Received:2014-03-22 Revised:2014-05-05 Published:2014-06-30
  • Contact: MA Jun-Hong E-mail:junhong@xju.edu.cn
  • Supported by:

    The project was supported by the Doctoral Scientific Research Starting Foundation of Xinjiang University, China (BS100110), Open Project Program of Xinjiang Laboratory of Advanced Functional Materials, China (XJDX0902-2010-06), and National Natural Science Foundation of China (21201146).

Abstract:

Nitrogen-doped reduced graphene oxide materials (N-RGO) derived from pyrolysis of graphene oxide (GO)/polyaniline composites were used as a support for the immobilization of Pt nanoparticles. The morphologies and structures of N-RGO and Pt/N-RGO were comprehensively characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Raman spectroscopy. The electrocatalytic activities of the as-prepared catalysts for CO stripping and methanol oxidation were investigated by cyclic voltammetry and chronoamperometry. The results showed that GO was reduced to multilayer graphene by thermal annealing accompanied with successful incorporation of N atoms into RGO. Moreover, the presence of the doped N atoms enhanced the surface defects and electrical conductivity of the RGO materials. Pt nanoparticles on N-RGO were more evenly dispersed, had better CO tolerance, and had higher activity/stability for methanol oxidation than those on RGO without N doping.

Key words: Polyaniline, Reduced graphene oxide, Nitrogen-doped, Platinum electrocatalyst, Methanol oxidation

MSC2000: 

  • O646