Abstract
Polyaniline films prepared on titanium were employed as substrate for the electrodeposition of gold. The modified electrode was used as anode for the electro-oxidation of ascorbic acid. The electrochemical behavior and electro-catalytic activity of Au/PAni/Ti electrode were characterized by cyclic voltammetry. The morphology of the polyaniline film and gold coating on PAni/Ti electrode were characterized by scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) techniques, respectively. Results indicated that gold nanoparticles were homogeneously dispersed on the surface of polyaniline film. The electro-oxidation of ascorbic acid is found to proceed more facile on Au/PAni/Ti electrode than on bare gold electrode. The irreversible oxidation current of ascorbic acid exhibits a linear dependence on the ascorbic acid concentration in the range of 1–5 mM.
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The authors would like to acknowledge the financial support of Iranian Nanotechnology Society and the Office of Vice Chancellor in Charge of Research of University of Tabriz.
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Hosseini, M., Momeni, M.M. & Faraji, M. Electrochemical fabrication of polyaniline films containing gold nanoparticles deposited on titanium electrode for electro-oxidation of ascorbic acid. J Mater Sci 45, 2365–2371 (2010). https://doi.org/10.1007/s10853-009-4202-4
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DOI: https://doi.org/10.1007/s10853-009-4202-4