聚苯胺修饰电极膜厚度的理论公式及其验证  

Theoretical Equation of Polymeric Thickness at PANI Film-coated Electrode and Its Experimental Verification

作　　者：尹斌[1] 倪伟娟[1] 张祖训[1] 

机构地区：[1]南京大学化学系,南京210008

出　　处：《化学学报》1995年第1期73-77,共5页Acta Chimica Sinica

基　　金：国家自然科学基金;中国科学院长春应用化学所电分析化学开放研究实验室资助的课题

摘　　要：本文提出了用于计算聚苯胺修饰电极膜厚度的理论公式,它适用于恒电流法和循环扫描伏安法制得的膜,经验证理论和实验相符合.文中还讨论了PANI密度及摩尔体积的计算和电化学测定方法.Polyaniline films were prepared on platinum electrode from an aqueous solution of monomer containing HC1 or H2SO4. Films were grown using a galvanostatic or cyclic sweep voltammetry. The thickness of the films (d) was estimated from the following equationd=[(Qf)mG]/(nfFAγρ)where G is the molar mass of leucoemeraldine, (Qf)m is the faradaic oxidation charge, nf is the number of electron involved in a redox process, F is Faraday' s constant, p is the estimated density of the film, A is the area of the electrode, γ is the roughness factor of electrode.The equation has been verified successfully. Experimental results are in good agreement with the theoretical values. The observed and calculated values of ρ and molar volume are listed in the paper also.

关 键 词：聚苯胺 修饰电极 膜厚度 

分 类 号：O633.21[理学—高分子化学] O657.1[理学—化学]