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A high-throughput combinatorial approach in the study of metallic alloys and their respective chalcogenides for application in the CO2 photo-/electrochemical reduction reaction

Grant number: 18/03156-5
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): September 01, 2018
Effective date (End): August 31, 2019
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal researcher:Fabio Henrique Barros de Lima
Grantee:Francisco Willian de Souza Lucas
Home Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:13/16930-7 - Electrocatalysis V: electrocatalytic processes of chemical and electrical energy interconversion, AP.TEM


The increasing rise in the atmospheric CO2 concentration (greenhouse gas and climate change) has encouraged the search for methods to fix this pollutant. In recent years, photo-/electro-reduction of CO2 has been highlighted as promising; beyond the consumption of this gas, it still produces fuel, or reagents such as hydrocarbons, alcohols and carboxylic acids. Several materials have been employed in this reaction, but despite the great advance of this area, there is still a great gap in the literature on the use and understanding of photo-/electrocatalysis in metal alloys (binary and ternary) and chalcogenides. Due to the existence of numerous materials that may present interesting performances, the use of the "High-Throughput" Combinatorial (HTC) approach to obtain metal alloys, and their respective chalcogenides, for application in CO2 photo-/electrochemical reduction reaction is the central objective of this project. HTC is an alternative methodology to conventional one-to-one experiments, presenting several advantages such as: accelerated experimental optimization, lower cost and quick access to a wide variety of materials. In the development of this project, materials that show evidence of selectivity of the CO2 photo-/electro-reduction to formic acid will be chosen, since it is considered one of the most profitable and feasible routes. Thus, we will study binary and ternary alloys of Sn with: Sb (not reporting in the literature, despite chemical similarity), In, Bi, Ag or Zn. These will also be submitted to thermochemical treatments for the formation of the respective chalcogenides (oxides, selenides and tellurides). After obtaining of films with remarkable performance, as proof of concept, synthetic photosynthesis reactor, or a CO2 reduction reactor coupled to a direct formic acid fuel cell will be manufactured. (AU)

Scientific publications (4)
(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)
LUCAS, FRANCISCO W. S.; LIMA, FABIO H. B. Electrodeposited Tin-Antimony Alloys as Novel Electrocatalysts for Selective and Stable Carbon Dioxide Reduction to Formate. CHEMELECTROCHEM, AUG 2020. Web of Science Citations: 0.
COSTA, MAGNO BARCELOS; LUCAS, FRANCISCO W. S.; MASCARO, LUCIA HELENA. Improvement of electrodeposited Sb(2)Se(3)thin film photoelectroactivity by cobalt grain boundary modification. JOURNAL OF MATERIALS CHEMISTRY A, v. 8, n. 27, p. 13742-13753, JUL 21 2020. Web of Science Citations: 0.
DE ARAUJO, MOISES A.; LUCAS, FRANCISCO W. S.; MASCARO, LUCIA H. Effect of the electrodeposition potential on the photoelectroactivity of the SnS/Sb2S3 thin films. Journal of Solid State Electrochemistry, v. 24, n. 2, SI JAN 2020. Web of Science Citations: 0.
COSTA, MAGNO BARCELOS; LUCAS, FRANCISCO W. S.; MASCARO, LUCIA HELENA. Electrodeposition Conditions Effect Sb2Se3 Thin-Film Properties. CHEMELECTROCHEM, v. 6, n. 11, p. 2937-2944, JUN 3 2019. Web of Science Citations: 2.

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