Resumo

FUENTES, A. S.; HERRERA, A.; AVALLE, L.  e  SANTOS, E.. Estimation of the real area of au nanoparticles over HOPG using electrochemical techniques. An. AFA [online]. 2021, vol.32, n.2, pp.48-54. ISSN 0327-358X.  http://dx.doi.org/10.31527/analesafa.2021.32.2.48.

The metallic electrodes show a high affinity for the electroadsorption processes of hydrogen and/or oxygen in acid solutions, so it is possible to characterize them by electrochemical techniques. In the present work the electroreduction of oxygenated species will be used to estimate the real areas of the electrodes designed with Au nanostructures in HOPG at different times of deposition. The results allow to conclude that Au nanostructures in HOPG can reach important electroactive areas. That is to say that despite their nanometric sizes they have a great capacity to experience the transfer of charge.

Palavras-chave : Au nanostructures; electrochemical technique; real area.

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