Chinese Journal of Applied Chemistry ›› 2017, Vol. 34 ›› Issue (10): 1209-1220.DOI: 10.11944/j.issn.1000-0518.2017.10.160501

• Orginal Article • Previous Articles    

Synthesis of Pt/{Reduced Graphene Oxide/Polyoxometalates}n Composite Films and Their Electrocatalytic Performance

HUANG Huodi,ZHANG Xiaofeng,ZHANG Yi,LE Lijuan,Lin Shen()   

  1. College of Chemistry and Chemical Engineering,Fujian Normal University,Fuzhou 350007,China
  • Received:2016-12-09 Accepted:2017-04-13 Published:2017-09-29 Online:2017-09-29
  • Contact: Lin Shen
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21571034), Natural Science Foundation of Fujian Province(No.2014J01033)

Abstract:

A series of {Reduced graphene oxide/Polyoxometalates}n({rGO/ POMs }n) multilayer composite films was prepared by layer by layer assembly(LBL) combined with the light-assisted reduction in situ. The {rGO/ POMs }n film was used as a carrier to support Pt nanoparticles electrodeposited by constant potential method to obtain a new type of fuel cell anode catalyst, namely Pt/{rGO/SiW12}6 multilayer composite film. The growth of the multilayer composite films and Pt nanoclusters' morphology were characterized by UV-visible absorption spectrum(UV-Vis), atomic force microscope(AFM) and scanning elecrton microscopy(SEM). The results indicate that the multilayer composite {rGO/ SiW12}6 is assembled on different substrate(quartz plate, indium tin oxide(ITO), and glass carbon electrode(GC)) surfaces with a continuous and uniform state, and the Pt nanoparticles on the surface exhibit a flower-like morphology. The electrochemical experiments show that Pt/{rGO/SiW12}6 catalyst exhibits better electrocatalytic activity, electrochemical stability and superior resistance to CO poisoning in the acidic methanol solution when it is compared with Pt/{rGO/PMo12}6, Pt/{rGO/PW12}6 and Pt. The Pt/{rGO/SiW12}6 multilayer composite film is expected to be the most promising methanol oxidation reaction catalyst in fuel cell anode.

Key words: methanol fuel cell, electrocatalytic oxidation, electrodeposition, graphene, polyoxometallate, platinum