On the application of nanostructured electrodes prepared by Ti/TiO2/WO3  template : A case study of removing toxicity of indigo using visible irradiation

Artigo

Fecha

2013-01-17

Registro en:

Chemosphere, v. 91, n. 5, p. 586-593, 2013.

0045-6535

1879-1298

http://hdl.handle.net/11449/74389

10.1016/j.chemosphere.2012.12.027

WOS:000318208500003

2-s2.0-84875804968

0000-0002-2296-1393

http://repositorioslatinoamericanos.uchile.cl/handle/2250/3923347

Autor

Universidade Estadual Paulista (Unesp)

Universidade de São Paulo (USP)

Institución

Universidade Paulista Júlio de Mesquita Filho (Brasil)

Resumen

New assays with HepG2 cells indicate that Indigo Carmine (IC), a dye that is widely used as additive in many food and pharmaceutical industries exhibited cytotoxic effects. This work describes the development of a bicomponent nanostructured Ti/TiO2/WO3 electrode prepared by template method and investigates its efficiency in a photoelectrocatalytic method by using visible light irradiation and applied potential of 1V. After 2h of treatment there are reduction of 97% discoloration, 62% of mineralization and formation of three byproducts assigned as: 2-amine-5-sulfo-benzoic acid, 2,3-dioxo-14-indole-5-sulfonic acid, and 2-amino-α-oxo-5-sulfo-benzeneacetic acid were identified by HPLC-MS/MS. But, cytotoxicity was completely removed after 120min of treatment. © 2013 Elsevier Ltd.