Synthesis, characterization and application of MoS2 and WS2 films in photoelectrocatalysis for hydrogen production

• Grant number: 17/12794-2
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: September 01, 2017
• End date: March 31, 2023
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Lucia Helena Mascaro Sales
• Grantee: Marina Medina da Silva
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated research grant: 13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID
• Associated scholarship(s): 21/12739-7 - MoS2-based compounds prepared by electrodeposition as cathodes for proton exchange membrane (PEM) water electrolysis, BE.EP.DD

Abstract

The high global energy demand and the environmental damage caused by the intensive use of fossil fuels over the years, shows the need to develop forms of alternative energy that is clean, renewable and economically attractive. One of the advantages of using hydrogen as a fuel is that in its combustion process there is no emission of polluting gases into the atmosphere. The photoelectrochemical process of water reduction is seen as an interesting process in the sense that it uses the energy of the photon to split the water molecule and produce H2. Several materials are being developed and characterized in order to evaluate as potential photocathodes for the catalysis of the hydrogen evolution reaction. In this way, this project proposes to develop and characterize photocathodes of MoS2 and WS2, synthesized by electrodeposition and by the chemical method, as well as the preparation of these films doped with Fe, Ni and Co. The physical characterization of the films will be carried out on the basis of different techniques such as: spectroscopy in the UV-Vis region, X-ray diffraction, Raman spectroscopy, among others. For the evaluation of the most efficient material, potentiostatic and galvanostatic polarization curves will be performed in order to analyze the Tafel parameters such as the applied overpotential and the exchange current density. (AU)

Scientific publications

(8)

(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)

SANTOS, HUGO L. S.; CORRADINI, PATRICIA G.; ANDRADE, MARCOS A. S., JR.; MASCARO, LUCIA HELENA. CuO/NiOx thin film-based photocathodes for photoelectrochemical water splitting. Journal of Solid State Electrochemistry, v. 24, n. 8, p. 10-pg., 2020-02-08. (17/11986-5, 13/07296-2, 18/16401-8, 17/12794-2)

SALOMAO, ARTHUR CORRADO; DOS SANTOS ARAUJO, MILENY; DOS SANTOS, HUGO LEANDRO SOUSA; MEDINA, MARINA; MASCARO, LUCIA HELENA; ANDRADE JUNIOR, MARCOS ANTONIO SANTANA. owards Highly Efficient Chalcopyrite Photocathodes for Water Splitting: The Use of Cocatalysts beyond P. CHEMSUSCHEM, v. 14, n. 21, SEP 2021. (19/26860-2, 17/15144-9, 13/07296-2, 20/09000-7, 17/12794-2, 17/11986-5, 14/50249-8)

MEDINA, MARINA; CORRADINI, PATRICIA G.; MASCARO, LUCIA H.. Facile One-Step Electrodeposition Fabrication of Amorphous MoS2 Catalysts in Titanium for Hydrogen Evolution Reaction. Journal of the Brazilian Chemical Society, v. 30, n. 10, SI, p. 2210-2218, OCT 2019. (17/12794-2, 13/07296-2, 18/16401-8, 14/50249-8)

SANTOS, HUGO L. S.; CORRADINI, PATRICIA G.; ANDRADE, JR., MARCOS A. S.; MASCARO, LUCIA HELENA. CuO/NiOx thin film-based photocathodes for photoelectrochemical water splitting. Journal of Solid State Electrochemistry, v. 24, n. 8, SI, FEB 2020. (17/12794-2, 17/11986-5, 18/16401-8, 13/07296-2)

MEDINA, MARINA; CORRADINI, PATRICIA G.; DE BRITO, JULIANA F.; SANTOS, HUGO L. SOUSA; MASCARO, LUCIA HELENA. he Substrate Morphology Effect for Sulfur-Rich Amorphous Molybdenum Sulfide for Electrochemical Hydrogen Evolution Reactio. Journal of the Electrochemical Society, v. 169, n. 2, FEB 1 2022. (17/12794-2, 13/07296-2, 17/11986-5, 18/16401-8, 18/02950-0, 14/50249-8)

SANTOS, HUGO L. S.; CORRADINI, PATRICIA G.; MEDINA, MARINA; DIAS, JEFERSON A.; MASCARO, LUCIA H.. NiMo-NiCu Inexpensive Composite with High Activity for Hydrogen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES, v. 12, n. 15, p. 17492-17501, APR 15 2020. (17/12794-2, 17/11986-5, 18/16401-8, 13/07296-2)

COSTA, MAGNO B.; LUCAS, FRANCISCO W. S.; MEDINA, MARINA; MASCARO, LUCIA H.. All-Electrochemically Grown Sb2Se3/a-MoSx Photocathodes for Hydrogen Production: The Effect of the MoSx Layer on the Surface Recombination and Photocorrosion of Sb2Se3 Films. ACS APPLIED ENERGY MATERIALS, v. 3, n. 10, p. 9799-9808, OCT 26 2020. (17/12794-2, 12/10947-2, 17/11986-5, 17/21365-8, 13/07296-2, 18/16401-8)

ARAUJO, MILENY DOS SANTOS; DOS SANTOS, HUGO LEANDRO SOUSA; MEDINA, MARINA; SALOMAO, ARTHUR CORRADO; MASCARO, LUCIA HELENA; ANDRADE JUNIOR, MARCOS ANTONIO SANTANA. Vanquishing CZTSSe deep defects to enhance photoelectrocatalytic water splitting. Electrochimica Acta, v. 464, p. 7-pg., 2023-10-01. (17/15144-9, 17/11986-5, 19/26860-2, 14/50249-8, 13/07296-2, 17/12794-2, 20/09000-7)