Synthesis and characterization of Si/TiO2/Au composite anodes for a novel synthetic approach to fluorinated pharmaceuticals and dye degradation

• Grant number: 15/00822-6
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• Start date: April 01, 2015
• End date: September 30, 2015
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Maria Valnice Boldrin
• Grantee: Guilherme Garcia Bessegato
• Supervisor: David Wood
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Institution abroad: Durham University (DU), England
• Associated to the scholarship: 14/03679-7 - Degradation of hair dyes and salon wastewater by photoelectrocatalysis with modified TiO2 nanotube electrodes and combination with ozonation, BP.DD

Abstract

Photoelectrocatalysis has been applied successfully in several research fields mainly in environmental and energy subjects. This project proposes the use of photoelectrochemical systems and Si/TiO2/Au composite photoanodes to explore a novel promising alternative to fast electrofluorination in order to produce drug molecules and in organics oxidation. The electrode consists of TiO2 sandwiched between a Si wafer and a gold grid. The unique aspect is three control parameters: current, bias voltage and light intensity. This is in contrast to the single control (current or voltage) available using conventional anodes, and potentially offers greater selectivity, in turn leading to cheaper and faster synthesis. We will develop stable anodes, characterise these structurally and electrochemically, and then assess their activity in the oxidation of dyes and in the selective fluorination of relevant target compounds aiming for the synthesis of F-DOPA (Parkinson's Disease). (AU)

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)

BESSEGATO, G. G.; COOKE, M. D.; CHRISTENSEN, P. A.; WOOD, D.; ZANONI, M. V. B.. Synthesis and electrochemical characterization of Si/TiO2/Au composite anode: Efficient oxygen evolution and hydroxyl radicals generation. Electrochimica Acta, v. 370, FEB 20 2021. (15/00822-6, 14/03679-7, 12/18357-0)