Author, as appears in the article.: Khiar, Habiba; Barka, Noureddine; Puga, Alberto
Department: Enginyeria Química
URV's Author/s: Puga Vaca, Alberto
Keywords: Advanced oxidation processes Ag3po4 sub-microcrystals Artificial photosynthesis Core-shell composite Crystal structur Crystal structure Decontamination Graphitic carbon nitride Hydrogen In-situ synthesi Indoor weak light Morphology Oxygen evolution Oxygen-evolving catalyst Photodegradation Photoelectrochemical water oxidation Pillared zirconium-phosphate Reduced graphene oxide Solar fuels Solar photocatalysis Visible light Visible-light irradiation
Abstract: Research in heterogeneous photocatalysis is burgeoning and rapidly evolving given the benefits of performing demanding chemical transformations under mild conditions. Remarkable success has been achieved in photodegradation as an advanced oxidation option in water or air decontamination. Artificial photosynthesis, whereby photonic (sunlight) energy can be stored in the form of (solar) fuels, represents an encouraging strategic goal. Specially in the latter case, the design of effective light -absorbing semiconductors with properly aligned band potentials and co -catalysts enabling intricate multi -electron redox reactions is key. As described in this review, metal phosphates offer distinct possibilities to become tuneable semiconductors with regards to the traditional oxides, owing to the effects of introducing phosphorus in electronic and lattice structures. This is most clearly exemplified in the case of Ag 3 PO 4 , slightly widening the bandgap of the parent oxide while maintaining appropriate valence band energies, which in conjunction result in highly active oxidation activity under visible light. Other non -noble late ( e.g. Co, Cu, Fe, Ni) or early ( e.g. Ti, Zr, V, Nb) transition metal phosphates tend to have superior reducing properties, and band engineering might result in efficient photocatalysis for fuel production, chiefly H 2 evolution and CO 2 reduction. Their more complex structural features require dedicated synthetic efforts, regrettably overlooked hitherto, to effectively explore their real possibilities. BiPO 4 is a UVactive semiconductor with ample applicability in photocatalysis, including hydrogen production; band engineering and other approaches to enable its response to visible light are discussed. Natural phosphates or hydroxyapatites are proven as resourceful families of structural or light -responsive components via band engineering by foreign metal doping. Beyond semiconductors, the discovery and development of surface metal (mostly cobalt) phosphates as highly efficient O 2 evolution co -catalysts have been key to the advancement of solar water splitting. This review scrutinises and thoroughly analyses research activity on the use of metal phosphates as key components in advanced photocatalysis, including heterojunction nanocomposites and photoelectrochemical systems with other semiconductors and catalysts.
Thematic Areas: Astronomia / física Biotecnología Chemistry (all) Chemistry (miscellaneous) Chemistry, inorganic & nuclear Ciências biológicas ii Engenharias iv Farmacia General chemistry Inorganic chemistry Interdisciplinar Materiais Materials chemistry Medicina ii Physical and theoretical chemistry Química
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: alberto.puga@urv.cat
Author identifier: 0000-0003-4201-2635
Record's date: 2024-10-26
Papper version: info:eu-repo/semantics/publishedVersion
Papper original source: Coordination Chemistry Reviews. 510 215814-
APA: Khiar, Habiba; Barka, Noureddine; Puga, Alberto (2024). Metal phosphates for the design of advanced heterogeneous photocatalysts. Coordination Chemistry Reviews, 510(), 215814-. DOI: 10.1016/j.ccr.2024.215814
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Entity: Universitat Rovira i Virgili
Journal publication year: 2024
Publication Type: Journal Publications
Repositori URV