The improvement of free-radical scavenging capacity of the phosphate medium electrosynthesized polyaniline

被引：33

作者：

Parsa, Ali ^{[1
]}

Ab Ghani, Sulaiman ^{[1
]}

机构：

[1] Univ Sains Malaysia, Usm 11800, Pulau Pinang, Malaysia

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 10期

关键词：

Antioxidant; DPPH; Phosphate; Polyaniline; Radical; IN-SITU; CONDUCTING POLYMERS; ANILINE; POLYMERIZATION; ELECTROPOLYMERIZATION; BIOCOMPATIBILITY; SPECTROSCOPY; ELECTROLYTE; MORPHOLOGY; MECHANISM;

D O I：

10.1016/j.electacta.2008.11.022

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The oxidative polymerization of aniline on composite 2B pencil graphite was accomplished in phosphoric acid (H3PO4) containing 0.06 M calcium phosphate (Ca-3(PO4)(2)). The shifting of three pairs of redox peaks by 250 mV to the negative direction has increased antioxidant capacity of polyaniline (PAni). This was realised through reaction with 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical in methanol. The phosphate medium prepared PAni was a strong reducing agent and radical scavenger. Additionally, it was twice more effective than the one prepared in chloride medium. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2856 / 2860

页数：5

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