Platinum nanoparticle-modified electrodes, morphologic, and electrochemical studies concerning electroactive materials deposition |
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Authors: | Marcio Vidotti Vinícius R Gonçales Vinicius S Quartero Barbara Danc Susana I Córdoba de Torresi |
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Institution: | 1. Chemistry Department, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK 2. Instituto de Química, Universidade de S?o Paulo, C.P. 26077, 05513-970, S?o Paulo, SP, Brazil
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Abstract: | The present work describes the synthesis of platinum nanoparticles followed by their electrophoretic deposition onto transparent
fluorine-doped tin oxide electrodes. The nano-Pt-modified electrodes were characterized by voltammetric studies in acidic
solutions showing a great electrocatalytic behavior towards H+ reduction being very interesting for fuel cell applications. Morphological characterization was performed by atomic force
microscopy on different modified electrodes showing a very rough surface which can be tuned by means of time of deposition.
Also, nickel hydroxide thin films were galvanostatically grown onto these electrodes showing an interesting electrochemical
behavior as sharper peaks, indicating a faster ionic exchange from the electrolyte to the film. |
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