TY - JOUR
T1 - On the application of nanostructured electrodes prepared by Ti/TiO2/WO3 " template"
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.
PY - 2013/4/30
Y1 - 2013/4/30
N2 - 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.
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.
KW - Byproducts
KW - Cytotoxicity
KW - Food dye
KW - Genotoxicity
KW - Indigo carmine
KW - Photoelectrocatalytic treatment
UR - http://www.scopus.com/inward/record.url?scp=84875804968&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2012.12.027
DO - 10.1016/j.chemosphere.2012.12.027
M3 - Article
C2 - 23332877
AN - SCOPUS:84875804968
VL - 91
SP - 586
EP - 593
JO - Chemosphere
JF - Chemosphere
SN - 0045-6535
IS - 5
ER -