Journal
ELECTROCHIMICA ACTA
Volume 60, Issue -, Pages 71-77Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2011.11.003
Keywords
Gold nanoparticles; Polypyrrole; Nanocomposite; Electrocatalysis
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Funding
- National Natural Science Foundation of China [21075048, 20543003]
- Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry of China
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Novel spherical three-dimensional (3D) dendritic gold@polypyrrole (PPy) nanocomposites were successfully synthesized by reacting pyrrole monomer with chloroauric acid (HAuCl4) through a self-assembly process in the presence of poly(sodium 4-styrenesulfonate) (PSS), which acts as both dopant and surfactant. The formation probability and the size of the dendritic gold@PPy nanocomposites depended on the concentrations of PSS, pyrrole and HAuCl4, and reaction temperature. The dendritic AuNPs@PPy nanocomposites were confirmed by scanning electron microscopy, transmission electron microscopy. X-ray diffraction, and X-ray photoelectron spectroscopy. In addition, the AuNPs@PPy nanocomposites had high electrocatalytic activity toward H2O2, which showed excellent potential application in sensing. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
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