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

T.T. Guaraldo; T.B. Zanoni; S.I.C. de Torresi; V.R. Gonçales; G.J. Zocolo; D.P. Oliveira; M.V.B. Zanoni

doi:10.1016/j.chemosphere.2012.12.027

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

T.T. Guaraldo, T.B. Zanoni, S.I.C. de Torresi, V.R. Gonçales, G.J. Zocolo, D.P. Oliveira, M.V.B. Zanoni

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

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 1 V. After 2 h 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 120 min of treatment.

Original language	English
Pages (from-to)	586-593
Number of pages	8
Journal	Chemosphere
Volume	91
Issue number	5
Early online date	18 Jan 2013
DOIs	https://doi.org/10.1016/j.chemosphere.2012.12.027
Publication status	Published - Apr 2013
Externally published	Yes

Keywords

Indigo carmine
Food dye
Cytotoxicity
Genotoxicity
Photoelectrocatalytic treatment
Byproducts

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10.1016/j.chemosphere.2012.12.027

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abstract = "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 1 V. After 2 h 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 120 min of treatment.",

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AU - Guaraldo, T.T.

AU - Zanoni, T.B.

AU - de Torresi, S.I.C.

AU - Gonçales, V.R.

AU - Zocolo, G.J.

AU - Oliveira, D.P.

AU - Zanoni, M.V.B.

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AB - 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 1 V. After 2 h 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 120 min of treatment.

KW - Indigo carmine

KW - Food dye

KW - Cytotoxicity

KW - Genotoxicity

KW - Photoelectrocatalytic treatment

KW - Byproducts

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JF - Chemosphere

IS - 5

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

Abstract

Keywords

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