Catalytic electroxidation pathway for the polymerization of polypyrrole in the presence of ultrafine silver nanoparticles

被引：28
作者：
Lee, HT [1 ]
Liu, YC [1 ]
机构：
[1] Vanung Univ, Dept Chem & Mat Engn, Chungli, Taiwan
来源：
POLYMER | 2005年 / 46卷 / 24期
关键词：
polypyrrole; Ag nanoparticles; mechanism of the nucleation and growth;
D O I：
10.1016/j.polymer.2005.09.031
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this work, we report the first electrochemical polymerization of polypyrrole (PPy) on Au substrates in aqueous solutions containing additives of prepared Ag nanoparticles with a diameter less than 2 nm. Due to the effect of Ag nanoparticles, which can provide a catalytic electroxidation pathway for the polymerization of PPy, the synthesized PPy film demonstrates some novel characteristics. It shows a finer and granular raspberry morphology with nano-scaled particles, and a rougher surface. The conductivity of PPy is significantly increased (similar to 8 times), which also reflects on the extremely high oxidation level of 0.35 revealed from the analysis of X-ray photoelectron spectroscopy (XPS). The mechanism of the nucleation and growth was investigated to explain the specific characteristics of PPy films. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：10727 / 10732
页数：6
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