Preparation, characterization and application of electrodes and semiconductors bicomposits of WO3/TiO2 of in the degradation photoelectrocatalytic of hair dyes

• Grant number: 08/09943-7
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: March 01, 2009
• End date: May 31, 2012
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Maria Valnice Boldrin
• Grantee: Luciano Evangelista Fraga
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil

Abstract

The use of coloring natural in the hair dye it is one of the oldest processes of dye, that today involves million of dollars with an enormous amount of available products for the consumption. The hair are colored for three methodologies: I - temporary, with coloring basic. II - Semi-permanent with coloring direct and III - Permanent, using process chemical oxidative of processes to the base of aromatic amines. The present project will evaluate the degradation photoelectrocatalytic of colors of hair with electrodes, semiconductors of TiO2, WO3 and bicomposits of WO3/TiO2 under artificial irradiations, being used mercury lamp 125 W and solar light, seeking to eliminate the risks to the environment and the human health for these coloring ones, precursors and other addictive presents in the dyeing of the hair.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FRAGA, LUCIANO EVANGELISTA; GUARALDO, THAIS TASSO; DE ARAUJO SOUZA, BARBARA CAMILA; BOLDRIN ZANONI, MARIA VALNICE. Semi-permanent hair dyes degradation at W/WO3 photoanode under controlled current density assisted by visible light. JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES, v. 20, n. 2, JUL 2017. (08/10449-7, 08/09943-7)