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Electrodeposition and characterization of Sb2Se3 and MSbxSey (M = Cu, Co, Ni, or Zn) thin films for applications in the hydrogen production and CO2 reduction.

Grant number: 17/21365-8
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): March 01, 2018
Effective date (End): November 30, 2022
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal Investigator:Lucia Helena Mascaro Sales
Grantee:Magno Barcelos Costa
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):21/07727-0 - Synthesis and characterization of heterostructures based on SLG/Mo/Sb2Se3/CdS/ZnO/cocatalyst for photoelectrocatalytic applications, BE.EP.DR


Recently, unrestrained industrial and population growth have brought problems directly related to the significant increase in energy consumption. Approximately 85% of this consumption comes from the burning of fossil fuels, resulting in a large amount of CO2 released into the atmosphere and boosting the greenhouse effect and climate change. Therefore, the lack of use of renewable or sufficiently clean energy sources is a realproblem and the search for sustainable development is a challenge in modern research. In this scenario, solar energy has gained huge attention because it is a clean and inexhaustible alternative, whose radiation can be harnessed in different ways. One of them is the chemical energy, where two of its main purposes are strongly highlighted: the process of water photoelectrolysis into H2(g) - a powerful and clean fuel - and the photoelectrochemical reduction of CO2 to industrial interest compounds - a promising form of CO2 recycling. As materials developed to this application, there was a resurgent interest in low toxicity, earthabundant, and low-cost semiconductors. Therefore, binary and ternary copper-based chalcogenides, for example, Sb2Se3 and CuSbSe2, respectively, are considered important semiconductors because they have shown good photovoltaic and photoelectrochemical properties. Additionally, according to studies associated to the hydrogen evolution reaction catalysis, compounds with Co, Ni and Zn have also shown positive photoactivity results.Due to these circumstances, the present work proposes the obtaining of Sb2Se3 and MSbxSey (M = Cu, Co, Ni, or Zn, for doped and ternary systems) by means of electrodeposition in the formation of photocathodes applied to the production of hydrogen or CO2 reduction. The films will be characterized in terms of their morphology, composition and crystalline structure by scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction techniques, respectively; UV-Vis and electrochemical impedance spectroscopy will be used to characterize optoelectronicproperties, while the photocurrent of the films will be evaluated by means of photoelectrochemical characterization, both in the absence and in the presence of Pt, MoS2and WS2 catalytic nanoparticles decorated on the films' surfaces. Finally, an electrode ofconfiguration Sb2Se3(or MSbxSey)/CdS/ZnO/catalytic nanoparticles will be fabricated and tested in the hydrogen production or reduction of CO2 reactions.

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Scientific publications (7)
(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)
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, . (17/11986-5, 17/21365-8, 18/16401-8, 18/03156-5, 13/07296-2)
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, . (17/11986-5, 18/16401-8, 18/03156-5, 17/21365-8)
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, . (17/12794-2, 12/10947-2, 17/11986-5, 17/21365-8, 13/07296-2, 18/16401-8)
COSTA, MAGNO B.; DE ARAUJO, MOISES A.; TINOCO, MARCOS V. DE LIMA; DE BRITO, JULIANA F.; MASCARO, LUCIA H.. Current trending and beyond for solar-driven water splitting reaction on WO3 photoanodes. JOURNAL OF ENERGY CHEMISTRY, v. 73, p. 26-pg., . (14/50249-8, 17/11986-5, 18/16401-8, 17/21365-8, 16/12681-0, 13/07296-2, 18/02950-0, 19/22131-6)
DE BRITO, JULIANA FERREIRA; COSTA, MAGNO BARCELOS; RAJESHWAR, KRISHNAN; MASCARO, LUCIA HELENA. Ammonia production from nitrogen under simulated solar irradiation, low overpotential, and mild conditions. Electrochimica Acta, v. 421, p. 10-pg., . (18/26005-2, 17/11986-5, 18/02950-0, 18/16401-8, 13/07296-2, 14/50249-8, 17/21365-8)
DE ARAUJO, MOISES A.; COSTA, MAGNO B.; MASCARO, LUCIA H.. Improved Photoelectrochemical Hydrogen Gas Generation on Sb2S3 Films Modified with an Earth-Abundant MoSx Co-Catalyst. ACS APPLIED ENERGY MATERIALS, v. 5, n. 1, p. 13-pg., . (17/21365-8, 17/11986-5, 13/07296-2, 16/12681-0)
DE LIMA TINOCO, MARCOS VINICIUS; COSTA, MAGNO BARCELOS; MASCARO, LUCIA HELENA; DE BRITO, JULIANA FERREIRA. Photoelectrodeposition of Pt nanoparticles on Sb2Se3 photocathodes for enhanced water splitting. Electrochimica Acta, v. 382, p. 11-pg., . (17/11986-5, 14/50249-8, 18/16401-8, 19/22131-6, 18/02950-0, 13/07296-2, 17/21365-8)

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