物理化学学报 >> 1989, Vol. 5 >> Issue (01): 33-37.doi: 10.3866/PKU.WHXB19890108

研究论文 上一篇    下一篇

用X-光电子能谱对热处理的四苯基铁卟啉化学修饰电极的研究

胡刚;许莉娟;于亚莉;董绍俊   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1987-06-20 修回日期:1987-12-05 发布日期:1989-02-15
  • 通讯作者: 董绍俊

Investigation of Microstructure at Iron Tetraphenylporphyrin Modified Glassy Carbon Electroed by XPS

Hu Gang;Xu Li-Juan;Yu Ya-Li;Dong Shao-Jun   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1987-06-20 Revised:1987-12-05 Published:1989-02-15
  • Contact: Dong Shao-Jun

摘要: 本文用XPS、DTA、和TG分析了解四苯基铁卟啉和四苯基铁卟啉化学修饰电极的热分解行为。由XPS谱图揭示了玻璃炭与四苯基铁卟啉之间的相互作用, 进而阐述了经热处理的四苯基铁卟啉化学修饰电极的表面结构与电催化稳定性的关系。从四苯基铁卟啉化学修饰电极的XPS价态谱发现Fe中心离子的3d电子在电极的电催化活性中的作用。

Abstract: Microstructure of the glassy carbon surface modified with iron tetraphenyfporphyrin (FeTPP) by heat treatment has been studied by XPS,, DTA and TG. XPS spectra of Fe 2P_3\2 level in FeTPP and iron tetraphenylporphyriu/glassy carbon (FeTPP/GC) have shown that a bond can be formed between the glassy carbon surface and both the central metal iron ion and the macrocyclic, ligand, which loses its four phenyl groups during the beat treatment. The relationship between the surface mierostructure of FeTPP/GC and the stability of electrode for catalysis of dioxygen reduction bas been elucidated. Valence band spectra of FeTP/GC by heat treatment at various temperatures have shown the role of 3d electrons of Fe ion in electrocatalytic activity of electrode.