Electrochemical and Morphology Study of the BDD/Ti Electrodes with Different Doping Levels

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Alves, S. A. ; Migliorini, F. L. ; Baldan, M. R. ; Ferreira, N. G. ; Lanza, M. R. V. ; Dick, LFP ; Stulp, S ; DeCarvalho, LM ; Nascimento, PC ; Arguello, J ; Knornschild, G

• Document type: Journal article
• Source: 18 SIMPOSIO BRASILEIRO DE ELETROQUIMICA E ELETROANALITICA (XVIII SIBEE); v. 43, n. 1, p. 7-pg., 2012-01-01.

Abstract

Boron-doped diamond (BDD) electrodes have shown characteristics that differ from other conventional electrodes, and that make them an excellent electrode in the electroanalysis, in the electrosynthesis and also in the treatment of wastewater with organic compounds. In this work, two different electrodes doped with (2,000 and 15,000 ppm) were characterized by Raman Spectroscopy and by Scanning electron Microscopy (SEM). In addition, they were characterized electrochemically by cyclic voltammetry. The electroactive area was estimated according to Cottrell's equation before and after the anodic and the cathodic treatment. From the results, it was observed that the electrodes have a similar behavior in the morphology and in the homogeneity of the films. The large potential window was confirmed for both electrodes (2.5 V vs Ag/AgCl) and for the less doped electrode was obtained a larger area without any treatment while for the more doped electrode, the major area was obtained after the cathodic treatment. (AU)

• FAPESP's process: 10/07525-3 - Application of electrochemical process/advanced oxidation process for degradation of organophosphorus pesticides and identification of degradation by-products
• Grantee: Suellen Aparecida Alves
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)