卟吩铁大环配合物FeTFPP修饰电极对氧的催化还原

Catalytic Reduction of Oxygen on Nafion Film Electrode Modified with Porphore Iron FeTFPP

采用循环伏安法研究了卟吩铁大环配合物FeTFPP在H2SO4溶液中对氧的催化还原,讨论了Nafion膜修饰电极上FeTFPP对电极催化活性和稳定性的影响;测定了FeTFPP在电极表面的异相电子转移反应速率常数为4.34×10-5cm/s,扩散系数为4.43×10-6cm/s。

The catalytic reduction behavior of oxygen on the electrode modified with 5, 10, 15, 20-Tetrakis （pentafluorophenyl）-21 H, -23 H-porphine iron （Ⅲ） chloride （FeTFPP） was studied using cyclic voltammetry in H2 SO4 solution. The influences of porphore iron FeTFPP on the catalytic activity and stability of the electrode were discussed.The reaction rate constant and diffusion coefficient of FeTFPP on the electrode are 4.34 × 10^-5 cm/s and 4.43 × 10^-6 cm/s, respectively.