Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (06): 1297-1304.doi: 10.3866/PKU.WHXB201304011

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Well-Dispersed Platinum Nanoparticles Supported on Nitrogen-Doped Hollow Carbon Microspheres for Oxygen-Reduction Reaction

ZHANG Xiao-Hua1, ZHONG Jin-Di1, YU Ya-Ming1, ZHANG Yun-Song2, LIU Bo3, CHEN Jin-Hua1   

  1. 1 State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China;
    2 College of Life and Science, Sichuan Agricultural University, Yaan 625014, P. R. China;
    3 Xi’an Taijin Industrial Electrochemical Technology Co., Ltd, Northwest Institute For Non-ferrous Metal Research, Xi’an 710016, P. R. China
  • Received:2012-10-25 Revised:2013-04-01 Published:2013-05-17
  • Supported by:

    The project was supported by the Program for Changjiang Scholars and Innovative Research Team in University, China (PCSIRT), Hunan Provincial Natural Science Foundation, China (12JJ2010), Young Teachers? Growth Plan (2012), and Specialized Research Fund for the Doctoral Program of Higher Education, China (20110161110009).

Abstract:

Nitrogen-doped hollow carbon microspheres (N-HCMS) were synthesized by carbonization of poly(dopamine). Platinum (Pt) nanoparticles (NPs) were deposited onto the N-HCMS via a microwaveassisted reduction process. The morphology, surface area, and pore size distribution of the N-HCMS supported Pt catalysts (Pt/N-HCMS) were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and surface area and porosimetry measurements. The electrocatalytic properties of the Pt/N-HCMS catalyst towards oxygen-reduction reaction were investigated by cyclic voltammetry and linear sweep voltammetry. The Pt/N-HCMS catalyst showed almost double the specific mass activity of a commercial carbon supported Pt catalyst. This was attributed to a uniform dispersion of the Pt NPs and the unique mesoporous and hollow structure of N-HCMS. In addition, fast electron transfer processes were found to occur on the nitrogen doped N-HCMS and the catalyst exhibited excellent long-term stability. This work is of significance for the development of high-performance cathodic catalysts in fuel cells.

Key words: Nitrogen-doping, Hollow carbon microsphere, Pt nanoparticle, Electrocatalysis, Oxygen-reduction reaction

MSC2000: 

  • O646