Acta Phys. -Chim. Sin. ›› 1989, Vol. 5 ›› Issue (01): 33-37.doi: 10.3866/PKU.WHXB19890108

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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

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.