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Electro-synthesis of novel nanostructured PEDOT films and their application as catalyst support

Cuifeng Zhou1, Zongwen Liu1*, Yushan Yan2, Xusheng Du3*, Yiu-Wing Mai3 and Simon Ringer1

Author Affiliations

1 Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW 2006, Australia

2 Department of Chemical & Environmental Engineering, University of California, 900 University Avenue, Riverside, CA, USA

3 School of Aerospace Mechanical & Mechatronic Engineering J07, University of Sydney, Sydney, NSW 2006, Australia

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Nanoscale Research Letters 2011, 6:364  doi:10.1186/1556-276X-6-364

Published: 27 April 2011

Abstract

Poly(3,4-ethylenedioxythiophene) (PEDOT) films doped with nitric and chlorine ions have been electrochemically deposited simply by a one-step electrochemical method in an aqueous media in the absence of any surfactant. The fabricated PEDOT films were characterized by scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The results indicate that the hierarchical structured PEDOT film doped with nitric ions displays a 'lunar craters' porous morphology consisting of PEDOT nano-sheets with a thickness of less than 2 nm. The effect of counter ions on the electro-polymerization, the electrochemistry, and the morphology of the polymer film was studied. Compared with PEDOT film doped with nitric acid, PEDOT film deposited in the presence of chlorine ions shows irregular morphology and less electrochemical activity. The specific nanostructure of the polymer was further studied as catalyst support for platinum nanoparticles to methanol electro-oxidation.