Catalytic electroxidation pathway for electropolymerization of polypyrrole in solutions containing gold nanoparticles

Yu Chuan Liu; Kuang Hsuan Yang

doi:10.1016/j.electacta.2006.02.013

Catalytic electroxidation pathway for electropolymerization of polypyrrole in solutions containing gold nanoparticles

Yu Chuan Liu, Kuang Hsuan Yang

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	5376-5382
Number of pages	7
Journal	Electrochimica Acta
Volume	51
Issue number	25
DOIs	https://doi.org/10.1016/j.electacta.2006.02.013
Publication status	Published - Jul 28 2006
Externally published	Yes

Keywords

Au nanoparticles
Catalytic electroxidation
Polypyrrole
X-ray photoelectron spectroscopy

ASJC Scopus subject areas

Chemical Engineering(all)
Analytical Chemistry
Electrochemistry

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10.1016/j.electacta.2006.02.013

Cite this

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title = "Catalytic electroxidation pathway for electropolymerization of polypyrrole in solutions containing gold nanoparticles",

abstract = "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.",

keywords = "Au nanoparticles, Catalytic electroxidation, Polypyrrole, X-ray photoelectron spectroscopy",

author = "Liu, {Yu Chuan} and Yang, {Kuang Hsuan}",

year = "2006",

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doi = "10.1016/j.electacta.2006.02.013",

language = "English",

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pages = "5376--5382",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Limited",

number = "25",

}

TY - JOUR

T1 - Catalytic electroxidation pathway for electropolymerization of polypyrrole in solutions containing gold nanoparticles

AU - Liu, Yu Chuan

AU - Yang, Kuang Hsuan

PY - 2006/7/28

Y1 - 2006/7/28

N2 - 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.

AB - 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.

KW - Au nanoparticles

KW - Catalytic electroxidation

KW - Polypyrrole

KW - X-ray photoelectron spectroscopy

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SN - 0013-4686

VL - 51

SP - 5376

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JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 25

ER -

Catalytic electroxidation pathway for electropolymerization of polypyrrole in solutions containing gold nanoparticles

Abstract

Keywords

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