Acta Chimica Sinica ›› 2007, Vol. 65 ›› Issue (12): 1149-1154. Previous Articles     Next Articles

Original Articles

铂粒子修饰单壁碳纳米管/聚苯胺复合膜对甲醛的电催化氧化

王喆1, 朱赞赞1, 力虎林*,1,2   

  1. (1兰州大学化学化工学院 兰州 730000)
    (2南京航空航天大学材料科学与技术学院 南京 210016)
  • 投稿日期:2006-12-31 修回日期:2007-02-16 发布日期:2007-06-28
  • 通讯作者: 力虎林

Electrocatalytic Oxidation of Formaldehyde on SWNT/PANI Composite Film Modified by Platinum Particles

WANG Zhe1; ZHU Zan-Zan1; LI Hu-Lin*,1,2   

  1. (1 College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000)
    (2 College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016)
  • Received:2006-12-31 Revised:2007-02-16 Published:2007-06-28
  • Contact: LI Hu-Lin

Single-walled carbon nanotubes (SWNT)/polyaniline (PANI) composite films with good uniformity and dispersion were prepared by electrochemical copolymerization of aniline containing well- dissolved SWNTs. Pt was dispersed on the composite films by electrodeposition technique. The presence of SWNTs and platinum in the composite film was confirmed by XRD analysis and scanning electron microscopy (SEM). Four-point probe investigations and electrochemical impedance spectroscopys (EIS) revealed that the well arrangement of PANI coated SWNTs in these films enhanced electric conductivity and facilitated the charge-transfer of the composite films. Cyclic voltammograms (CV) and chronoamperogram showed that Pt-modified SWNT/PANI composite film performed higher electrocatalytic activity and better long-term stability than Pt-modified pure PANI film toward formaldehyde oxidation. The results imply that the SWNT/PANI composite film as a promising support material improves the electrocatalytic activity for formaldehyde oxidation greatly.

Key words: single-walled carbon nanotubes, polyaniline, composite film, formaldehyde electrooxidation, electrocatalytic activity