Acta Phys. -Chim. Sin. ›› 2006, Vol. 22 ›› Issue (08): 967-971.doi: 10.1016/S1872-1508(06)60042-9

• ARTICLE • Previous Articles     Next Articles

Study on Characterizations and Growth Mechanism of Pt/Onion-like Fullerenes Catalyst

YANG Xiao-Wei;GUO Jun-Jie;WANG Xiao-Min;LIU Xu-Guang;XU Bing-She   

  1. College of Materials Science and Engineering, Taiyuan University of Technology, P. R. China;Key Laboratory of Interface Science and Engineering in Advanced Materials of Taiyuan University of Technology, Ministry of Education, Taiyuan 030024, P. R. China
  • Received:2006-02-09 Revised:2006-03-13 Published:2006-08-04
  • Contact: XU Bing-She

Abstract: Onion-like Fullerenes (OLFs) were prepared by CVD method, and purified by nitric acid treatment. 10wt. %Pt/OLFs catalyst was prepared by impregnation-reduction method with three different loadings of formaldehyde as the reducing agent and the morphology and structure were characterized. XRD patterns showed the excessive reducer benefits the growth of Pt crystals. HRTEM images showed that Pt particles with the diameter of 2.5nm~3.5nm had well distribution in the Pt/OLFs composite. FTIR spectrum also indicated lots of functional groups existed on the surface of OLFs purified. The reducing action of formaldehyde in the process of supporting was discussed.

Key words: Onion-like fullerenes(OLFs);Pt/OLFs catalyst;Reductive;Characterizations, Growth mechanism