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

Thais T. Guaraldo; Thalita B. Zanoni; Susana I.C. de Torresi; Vinicius R. Gonçales; Guilherme J. Zocolo; Danielle P. Oliveira; Maria Valnice 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

Thais T. Guaraldo, Thalita B. Zanoni, Susana I.C. de Torresi, Vinicius R. Gonçales, Guilherme J. Zocolo, Danielle P. Oliveira, Maria Valnice B. Zanoni

Department of Chemical Engineering

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

44 Citations (SciVal)

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 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.

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 - 30 Apr 2013

Bibliographical note

Funding Information:
The authors are grateful to CAPES, FAPESP (Process: 2008/10449-7) and CNPq.

Funding

The authors are grateful to CAPES, FAPESP (Process: 2008/10449-7) and CNPq.

Keywords

Byproducts
Cytotoxicity
Food dye
Genotoxicity
Indigo carmine
Photoelectrocatalytic treatment

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
General Chemistry
Pollution
Health, Toxicology and Mutagenesis

Access to Document

10.1016/j.chemosphere.2012.12.027

Cite this

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

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 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.",

keywords = "Byproducts, Cytotoxicity, Food dye, Genotoxicity, Indigo carmine, Photoelectrocatalytic treatment",

author = "Guaraldo, \{Thais T.\} and Zanoni, \{Thalita B.\} and \{de Torresi\}, \{Susana I.C.\} and Gon{\c c}ales, \{Vinicius R.\} and Zocolo, \{Guilherme J.\} and Oliveira, \{Danielle P.\} and Zanoni, \{Maria Valnice B.\}",

note = "Funding Information: The authors are grateful to CAPES, FAPESP (Process: 2008/10449-7) and CNPq. ",

year = "2013",

month = apr,

day = "30",

doi = "10.1016/j.chemosphere.2012.12.027",

language = "English",

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journal = "Chemosphere",

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T2 - A case study of removing toxicity of indigo using visible irradiation

AU - Guaraldo, Thais T.

AU - Zanoni, Thalita B.

AU - de Torresi, Susana I.C.

AU - Gonçales, Vinicius R.

AU - Zocolo, Guilherme J.

AU - Oliveira, Danielle P.

AU - Zanoni, Maria Valnice B.

N1 - Funding Information: The authors are grateful to CAPES, FAPESP (Process: 2008/10449-7) and CNPq.

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Y1 - 2013/4/30

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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 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.

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