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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/25708
Title: 
Photoelectrocatalytic Removal of Bromate Using Ti/TiO2 Coated as a Photocathode
Author(s): 
Institution: 
  • Universidade Estadual Paulista (UNESP)
  • Univ Wisconsin
ISSN: 
0013-936X
Sponsorship: 
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Sponsorship Process Number: 
FAPESP: 04/07353-7
Abstract: 
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.
Issue Date: 
1-Oct-2009
Citation: 
Environmental Science & Technology. Washington: Amer Chemical Soc, v. 43, n. 19, p. 7496-7502, 2009.
Time Duration: 
7496-7502
Publisher: 
Amer Chemical Soc
Source: 
http://dx.doi.org/10.1021/es803366d
URI: 
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/25708
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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