Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (5): 927-932.doi: 10.3866/PKU.WHXB201503241

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Dual-Sacrificial Template Synthesis of One-Dimensional Tubular Pt-Mn3O4-C Composite with Excellent Electrocatalytic Performance for Methanol Oxidation

LI Li, HE Xiao-Li, QIN Tao, DAI Fu-Tao, ZHANG Xiao-Hua, CHEN Jin-Hua   

  1. State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
  • Received:2015-01-02 Revised:2015-03-23 Published:2015-05-08
  • Contact: ZHANG Xiao-Hua, CHEN Jin-Hua E-mail:mickyxie@hnu.edu.cn;chenjinhua@hnu.edu.cn
  • Supported by:

    The project was supported by the Program for Changjiang Scholars and Innovative Research Team in University, China (IRT1238), National Natural Science Foundation of China (21275041, 21235002, J1210040), Foundation for Innovative Research Groups of National Natural Science Foundation of China (21221003), Hunan Provincial Natural Science Foundation, China (12JJ2010), and Specialized Research Fund for the Doctoral Program of Higher Education, China (20110161110009).

Abstract:

A new Pt-based electrocatalyst with one-dimensional tubular Mn3O4-C as the catalyst support was synthesized by a dual-sacrificial template strategy. The morphology, structure, and composition of the Pt-Mn3O4- C composite were characterized by transmission electron microscopy, X-ray diffraction, and energy dispersive X-ray spectroscopy, respectively. The electrochemical performance of Pt-Mn3O4-C was investigated by cyclic voltammetry. The results show that Pt nanoparticles with an average size of 1.8 nm are uniformly dispersed on tubular Mn3O4-C, and Pt-Mn3O4-C exhibits superior electrocatalytic activity and higher stability for methanol oxidation than the commercial E-TEK Pt/C catalyst (20% (w, mass fraction) Pt). The excellent performance of Pt-Mn3O4-C is attributed to the uniform dispersion of Pt nanoparticles on Mn3O4-C and the synergetic catalytic effect of Pt and Mn3O4.

Key words: Pt nanoparticle, Tubular Mn3O4-C, Electrocatalyst, Methanol electrooxidation

MSC2000: 

  • O646