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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Synthesis and electrochemical characterization of Si/TiO2/Au composite anode: Efficient oxygen evolution and hydroxyl radicals generation

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Author(s):
Bessegato, G. G. [1, 2, 3, 4] ; Cooke, M. D. [2] ; Christensen, P. A. [3] ; Wood, D. [2, 5] ; Zanoni, M. V. B. [1]
Total Authors: 5
Affiliation:
[1] Sao Paulo State Univ UNESP, Inst Chem, BR-14800060 Araraquara, SP - Brazil
[2] Univ Durham, Dept Engn, Durham DH1 3LE - England
[3] Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear - England
[4] Western Parana State Univ Unioeste, Interdisciplinary Res Grp Environm Photochem & El, BR-85903000 Toledo, Parana - Brazil
[5] Northumbria Univ, Smart Mat & Surfaces Grp, Dept Math Phys & Elect Engn, Newcastle Upon Tyne NE1 8ST, Tyne & Wear - England
Total Affiliations: 5
Document type: Journal article
Source: Electrochimica Acta; v. 370, FEB 20 2021.
Web of Science Citations: 0
Abstract

This paper describes the photoelectrochemical properties of a novel composite anode composed of a 200 nm Au-Sb ohmic contact/300 mu m n-Si wafer/20 nm TiO2/120 nm Au grid. By connecting the Au ohmic contact to the gold grid via a power supply, holes thermally or photochemically generated in the Si are launched to the TiO2 surface where they are converted to (OH)-O-center dot radicals. We show that the Si/TiO2/Au composite anode can be efficiently employed in the oxygen evolution reaction and prove that the anode generates hydroxyl radicals (using p-nitrosodimethylaniline as a probe). Potential applications include the photoelectrocatalytic oxidation of organic contaminants, water splitting, and organic electro-synthesis. (C) 2021 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 15/00822-6 - Synthesis and characterization of Si/TiO2/Au composite anodes for a novel synthetic approach to fluorinated pharmaceuticals and dye degradation
Grantee:Guilherme Garcia Bessegato
Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 14/03679-7 - Degradation of hair dyes and salon wastewater by photoelectrocatalysis with modified TiO2 nanotube electrodes and combination with ozonation
Grantee:Guilherme Garcia Bessegato
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 12/18357-0 - Study of photoeletrocatalytic degradation of cosmetic dyes with TiO2 nanotube electrodes undoped and doped Sb2S3
Grantee:Guilherme Garcia Bessegato
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)