Theoretical equation of polymeric thickness at PANI film-coated electrode and its experimental verification

Abstract

Polyaniline films were prepared on platinum electrode from an aqueous solution of monomer containing HCl or H2SO4. Films were grown using a galvanostatic or cyclic sweep voltammetry. The thickness of the films (d) was estimated from the following equation where G is the molar mass of leucoemeraldine, (Qf)m is the faradaic oxidation charge, nf is the no. of electron involved in a redox process, f is Faraday's constant, p is the estimated d. of the film, A is the area of the electrode, g is the roughness factor of electrode. The equation was verified successfully. Experimental results are in good agreement with the theor. values. The observed and calculated values of p and molar volume are listed in the paper also.

Key words: CHEMICAL MODIFIED ELECTRODE, POLYANILINE

CLC Number:

O646

Cite this article

YIN BIN;NI WEIJUAN;ZHANG ZUXUN. Theoretical equation of polymeric thickness at PANI film-coated electrode and its experimental verification[J]. Acta Chimica Sinica, 1995, 53(1): 73-77.

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