Effect of TiO2 nanoparticles on the electropolymerization of polypyrrole

Yu Chuan Liu; Jieh Ming Huang; Chun En Tsai; Thomas C. Chuang; Cheng Cai Wang

doi:10.1016/j.cplett.2004.02.014

Effect of TiO₂ nanoparticles on the electropolymerization of polypyrrole

Yu Chuan Liu, Jieh Ming Huang, Chun En Tsai, Thomas C. Chuang, Cheng Cai Wang

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

60 Citations (Scopus)

Abstract

We report here the first electrochemical polymerization of polypyrrole (PPy) on gold substrates in aqueous solutions containing additives of 1 mM rutile TiO₂ nanoparticles under the irradiation of UV light. As a result, PPy/TiO₂ composites were prepared with an increased conductivity of 135 Scm^-1, raising one order as compared with that of pure PPy. Furthermore, the thermal stability of the PPy-based composites was improved, as shown from thermogravimetric analysis (TGA). The effects of TiO₂ on the PPy electropolymerization under UV irradiation were examined by its nucleation and growth mechanism and the onset potential of polymerization. The results indicate that the nucleation and growth are instantaneous two-dimensional and three-dimensional processes before and after nuclei overlapping, respectively, for the composite electropolymerization, which are distinguishable from those of pure PPy electropolymerization before nuclei overlapping.

Original language	English
Pages (from-to)	155-159
Number of pages	5
Journal	Chemical Physics Letters
Volume	387
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2004.02.014
Publication status	Published - Mar 21 2004
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.cplett.2004.02.014

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title = "Effect of TiO2 nanoparticles on the electropolymerization of polypyrrole",

abstract = "We report here the first electrochemical polymerization of polypyrrole (PPy) on gold substrates in aqueous solutions containing additives of 1 mM rutile TiO2 nanoparticles under the irradiation of UV light. As a result, PPy/TiO2 composites were prepared with an increased conductivity of 135 Scm-1, raising one order as compared with that of pure PPy. Furthermore, the thermal stability of the PPy-based composites was improved, as shown from thermogravimetric analysis (TGA). The effects of TiO2 on the PPy electropolymerization under UV irradiation were examined by its nucleation and growth mechanism and the onset potential of polymerization. The results indicate that the nucleation and growth are instantaneous two-dimensional and three-dimensional processes before and after nuclei overlapping, respectively, for the composite electropolymerization, which are distinguishable from those of pure PPy electropolymerization before nuclei overlapping.",

author = "Liu, {Yu Chuan} and Huang, {Jieh Ming} and Tsai, {Chun En} and Chuang, {Thomas C.} and Wang, {Cheng Cai}",

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T1 - Effect of TiO2 nanoparticles on the electropolymerization of polypyrrole

AU - Liu, Yu Chuan

AU - Huang, Jieh Ming

AU - Tsai, Chun En

AU - Chuang, Thomas C.

AU - Wang, Cheng Cai

PY - 2004/3/21

Y1 - 2004/3/21

N2 - We report here the first electrochemical polymerization of polypyrrole (PPy) on gold substrates in aqueous solutions containing additives of 1 mM rutile TiO2 nanoparticles under the irradiation of UV light. As a result, PPy/TiO2 composites were prepared with an increased conductivity of 135 Scm-1, raising one order as compared with that of pure PPy. Furthermore, the thermal stability of the PPy-based composites was improved, as shown from thermogravimetric analysis (TGA). The effects of TiO2 on the PPy electropolymerization under UV irradiation were examined by its nucleation and growth mechanism and the onset potential of polymerization. The results indicate that the nucleation and growth are instantaneous two-dimensional and three-dimensional processes before and after nuclei overlapping, respectively, for the composite electropolymerization, which are distinguishable from those of pure PPy electropolymerization before nuclei overlapping.

AB - We report here the first electrochemical polymerization of polypyrrole (PPy) on gold substrates in aqueous solutions containing additives of 1 mM rutile TiO2 nanoparticles under the irradiation of UV light. As a result, PPy/TiO2 composites were prepared with an increased conductivity of 135 Scm-1, raising one order as compared with that of pure PPy. Furthermore, the thermal stability of the PPy-based composites was improved, as shown from thermogravimetric analysis (TGA). The effects of TiO2 on the PPy electropolymerization under UV irradiation were examined by its nucleation and growth mechanism and the onset potential of polymerization. The results indicate that the nucleation and growth are instantaneous two-dimensional and three-dimensional processes before and after nuclei overlapping, respectively, for the composite electropolymerization, which are distinguishable from those of pure PPy electropolymerization before nuclei overlapping.

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Effect of TiO₂ nanoparticles on the electropolymerization of polypyrrole

Abstract

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