摘要
We report here the first electrochemical polymerization of polypyrrole (PPy) on Au substrates in aqueous solutions containing additives of prepared Au nanoparticles with a diameter of ca. 2 nm. Encouragingly, the synthesized PPy films demonstrate novel characteristics due to the effects of Au nanoparticles, which provide a catalytic electroxidation pathway. The prepared PPy shows a stereomorphology, which is distinguishable from the typically granular raspberry morphology of pure PPy, and a rougher surface. The conductivity of PPy is significantly increased (∼10 times), which also reflects on the extremely high oxidation level of 0.36 revealed from the analysis of X-ray photoelectron spectroscopy (XPS). The mechanism of the nucleation and growth, and the X-ray diffraction (XRD) pattern were investigated to explain the specific characteristics of PPy films.
原文 | 英語 |
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頁(從 - 到) | 5376-5382 |
頁數 | 7 |
期刊 | Electrochimica Acta |
卷 | 51 |
發行號 | 25 |
DOIs | |
出版狀態 | 已發佈 - 7月 28 2006 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 化學工程 (全部)
- 分析化學
- 電化學