The influence of hydrogen plasma pre-treatment on the structure of BDND electrode surface applied for phenol detection
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Data
2011-11-01
Autores
Azevedo, Adriana Faria
Souza, F. A.
Hammer, Peter [UNESP]
Baldan, M. R.
Ferreira, N. G.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
The surface properties of boron-doped nanocrystalline diamond films treated with H(2) plasma was investigated in regard to their electrochemical response for phenol oxidation. The surface of these films is relatively flat formed by crystallites with sizes of about 40 nm. X-ray photoelectron spectroscopy analyses showed that electrode surface has a high amount of C-H bonds. This behavior is in agreement with Mott-Schottky plot measurements concerning the flat band potential that presented a value as expected for hydrogenated diamond surface. This electrode presented the phenol detection limit of 0.08 mg L(-1) for low phenol concentrations from 40 to 250 mu mol L(-1).
Descrição
Palavras-chave
Nanocrystalline diamond films, Boron doping, Phenol oxidation, Electrochemistry, X-ray photoelectron spectroscopy
Como citar
Journal of Nanoparticle Research. Dordrecht: Springer, v. 13, n. 11, p. 6133-6139, 2011.