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Development of solid-catalysts based on semiconductor oxides for the hydrogen production from water splitting

Abstract

The preservation of water for human consumption is of great importance for their livelihood in the world. The oil sector deserves special attention regarding to surface water and sea pollution associated with shipping operations, prospecting operations, deep-water exploration and corrosion; losses related are the most devastating. On the other hand, the search for fuels from renewable-sources has been a ceaseless issue of the scientific community, in this context hydrogen is a promising alternative fuel as it has a high calorific value, is of low toxicity, and their use in fuel cell produces only water as a byproduct. The water splitting is an environmentally-friendly, simple and economical way to produce hydrogen, however this process needs of more studies to allow its use in large scale. The photocatalytic processes allow us to integrate these two referred processes through photocatalytic hydrogen production from water; in this process an organic molecule of easy oxidation (in this case the organic contaminant) in aqueous solution serves as a sacrificial agent to produce hydrogen from water and light in the presence of a solid photocatalyst. The catalysts proposed for these processes are based of Pt supported on mixtures of Nb2O5, TiO2 doped with Ce and Zr. It is expected that the results of this project should contribute to the training of human resources, as well as to alternative solutions to an environmental problem and an energy problem. (AU)

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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)
LIMA, HERBERT DE P.; ASENCIOS, YVAN J. O. Eichhornia crassipes (Mart.) Solms (natural or carbonized) as biosorbent to remove pollutants in water. SN APPLIED SCIENCES, v. 3, n. 8 AUG 2021. Web of Science Citations: 0.
MUEDAS-TAIPE, GOLFER; MAZA MEJIA, ILY M.; SANTILLAN, FATIMA A.; VELASQUEZ, CARLOS J.; ASENCIOS, YVAN J. O. Removal of azo dyes in aqueous solutions using magnetized and chemically modified chitosan beads. Materials Chemistry and Physics, v. 256, DEC 1 2020. Web of Science Citations: 0.
LOURENCO, VITORIA S.; BOTO, SABRINA M.; CARVALHO, WAGNER A.; ASENCIOS, YVAN J. O. Peruibe black mud based catalysts for the removal of organic pollutants in water. JOURNAL OF SEDIMENTARY ENVIRONMENTS, JUL 2020. Web of Science Citations: 0.
ASENCIOS, YVAN J. O.; QUIJO, MARCELLA V.; MARCOS, FRANCIELLE C. F.; NOGUEIRA, ANDRE E.; ROCCA, RENE R.; ASSAF, ELISABETE M. Photocatalytic activity of Nb heterostructure (NaNbO3/Na2Nb4O11) and Nb/clay materials in the degradation of organic compounds. Solar Energy, v. 194, p. 37-46, DEC 2019. Web of Science Citations: 0.
SILVA, PRISCILA CHRISTOPOULOS; FERRAZ, NATHALIA PEREIRA; PERPETUO, ELEN AQUINO; OLORTIGA ASENCIOS, YVAN JESUS. OIL PRODUCED WATER TREATMENT USING ADVANCED OXIDATIVE PROCESSES: HETEROGENEOUS-PHOTOCATALYSIS AND PHOTO-FENTON. JOURNAL OF SEDIMENTARY ENVIRONMENTS, v. 4, n. 1, p. 99-107, JAN-MAR 2019. Web of Science Citations: 0.
ASENCIOS, YVAN J. O.; ASSAF, ELISABETE M. Synthesis of NiO/Y2O3/ZrO2 Catalysts Prepared by One-Step Polymerization Method and Their Use in the Syngas Production from Methane. INTERNATIONAL JOURNAL OF CHEMICAL ENGINEERING, 2018. Web of Science Citations: 0.
FERRAZ, NATHALIA P.; MARCOS, FRANCIELLE C. F.; NOGUEIRA, ANDRE E.; MARTINS, ALYSSON S.; LANZA, MARCOS R. V.; ASSAF, ELISABETE M.; ASENCIOS, YVAN J. O. Hexagonal-Nb2O5/Anatase-TiO2 mixtures and their applications in the removal of Methylene Blue dye under various conditions. Materials Chemistry and Physics, v. 198, p. 331-340, SEP 1 2017. Web of Science Citations: 9.

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