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RESEARCH PRODUCT
Photocatalytic and photothermocatalytic applications of cerium oxide-based materials
Marianna BellarditaRoberto FiorenzaLeonardo PalmisanoSalvatore Scirèsubject
CeriumCerium oxideMaterials scienceNonmetalChemical engineeringchemistryDopingPhotocatalysisWater splittingchemistry.chemical_elementCeO2 photocatalysis photothermocatalysisRedoxCatalysisdescription
Abstract Cerium dioxide (CeO2) presents unique properties as the special electronic and optical properties of the 4f electrons, the capacity to form nonstoichiometric oxygen-deficient CeO2 − x oxides, the high oxygen mobility, and the reversible transformation between Ce4 + and Ce3 + that make it interesting for photocatalytic applications. CeO2 is a wide bandgap semiconductor (3.0–3.4 eV), but different approaches as combination with oxides, deposition of noble metals, doping with metal and nonmetal species, and the formation of surface defects have been adopted to extend its absorption towards the visible region with the aim to improve its photocatalytic performance. Cerium oxide-based materials have been used as photocatalysts for degradation of harmful compounds in water and air effluents with some attention also to photothermal catalytic reactions, for selective oxidation reactions, CO2 reduction, and water splitting. Some examples of all of these topics are described in the following chapter.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 |