Preparation and Electrochemical Properties of Polyaniline Nanofiber Modified Graphite Foil

doi:10.3969/j.issn.0251-0790.2012.06.032

Abstract

Abstract: Polyaniline nanofiber(Nano-PANI) modified graphite foil(GF)(Nano-PANI/GF) was prepared by electrochemical polymerization of aniline on GF electrode. The polymer on the modified electrode Nano-PANI/GF was characterized by FTIR. The morphologies of the modified electrode were investigated by SEM. The Nano-PANI/GF electrode made through cyclic voltammetric scans in a solution of 0.1 mol/L aniline and 1.0 mol/L HCl showed good electroactivites in 0.1 mol/L phosphate buffer solution(pH=6.9). The electrocatalytic properties of the modified electrode toward ascorbic acid oxidation were studied through cyclic voltammetry and potentiometry. The current for ascorbic acid oxidation on the modified electrode at 0.2 V showed linear response to the concentration of ascorbic acid in the range of 1.7-2.0×10³ μmol/L. The detection limit of ascorbic acid on the modified electrode is 1.7 μmol/L(S/N=3).

Key words: Polyaniline nanofiber, Graphite foil, Electrocatalysis, Ascorbic acid

CLC Number:

O646
O631

TrendMD:

SANG Xiao-Guang, ZENG Fan-Wu, LIU Xiao-Xia. Preparation and Electrochemical Properties of Polyaniline Nanofiber Modified Graphite Foil[J]. Chem. J. Chinese Universities, 2012, 33(06): 1312.

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