Journal
JOURNAL OF MATERIALS SCIENCE
Volume 45, Issue 9, Pages 2365-2371Publisher
SPRINGER
DOI: 10.1007/s10853-009-4202-4
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Funding
- Iranian Nanotechnology Society
- Office of Vice Chancellor in Charge of Research of University of Tabriz
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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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