Publicação: Photoelectrocatalytic Removal of Bromate Using Ti/TiO2 Coated as a Photocathode
Nenhuma Miniatura disponível
Data
2009-10-01
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Amer Chemical Soc
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
These studies represent the rare use of a TiO2 material as a photocathode and the first application of photoelectrocatalysis for BrO3- removal. Photoelectrocatalytic reduction of BrO3- to Br- can reach 70% at neutral pH under an applied potential of -0.20 V versus SCE (saturated calomel electrode) after 75 min on the irradiated nanoporous thin-film TiO2-Coated working electrode, which presented a flat band potential of -0.0274 V versus SCE. Regardless of the potential applied in these experiments, no BrO3- removal was observed in the counter electrode compartment or during electrolysis or photocatalysis, confirming that reduction of BrO3- to Br- requires the combination of a negative potential (ideally near -0.20 V) and ultraviolet irradiation of the Ti/TiO2 electrode. The process was selective for BrO3- removal in that this process did not ;significantly reduce levels of Ca2+ and Mg2+ in drinking waters.
Descrição
Palavras-chave
Idioma
Inglês
Como citar
Environmental Science & Technology. Washington: Amer Chemical Soc, v. 43, n. 19, p. 7496-7502, 2009.
