Investigation of Electro-oxidation activity of Pt-CNTs/GC electrodes
Date
2007Author
Zhong Qi-Ling
钟起玲
Zhang Bing
张兵
Rao Gui-Shi
饶贵仕
Ding Yue-Min
丁月敏
Wang Guo-Fu
王国富
Jiang Yu-Xiong
蒋玉雄
Ren Bin
任斌
Tian Zhong-Qun
田中群
Collections
- 化学化工-已发表论文 [14469]
Abstract
The morphology and the structure character of the Pt-CNTs/GC electrode were characterized via Transmission Electron Microscopy ( TEM) and the selected area electron diffraction. The electro-oxidation behavior of CO and methanol on Pt-CNTs/GC electrode were studied with cyclic voltammograms or Chronoamperometry. Three oxidation peaks were observed for CO observed on Pt-CNTs/GC electrode. Methanol were found to be dissociated spontaneously on the electrode to produce a strong adsorbed intermediate CO. Among the three oxidation peaks, peak I is due to the briged CO adsorbing. But peaks II and III were assigned to split of the linear CO which is adsorbed on the Pt-CNTs nanocluster with different particle sizes and Pt film. The oxidation current of methanol on Pt-CNTs/GC electrode was- always not increasing with the increasing of the amount of Pt loading. The result indicates that there is an optimal Pt loading for methanol oxidation. It is necessary to select the catalyst with proper pt loading when the anode of direct-methanol fuel cell was prepared.