Dominant role of OH<sup>−</sup> and Ti<sup>3+</sup> defects on the electronic structure of TiO<sub>2</sub> thin films for water splitting
Maria-Isabel Mendoza-Diaz, A. Balocchi, Kolade A. Oyekan, Kui Tan, William G. Vandenberghe, Alain Estève, Carole Rossi
Abstract
Electron traps are created by Ti 3+ species associated to Ti interstitials and oxygen vacancies, whereas hole traps are associated to adsorbed OH − ; thus, extending the charges lifetime contributing to the redox reactions for H 2 production.
Topics & Concepts
PhotoluminescenceX-ray photoelectron spectroscopyAnataseMaterials sciencePhotocatalysisSpectroscopyWater splittingSputteringThin filmElectronic structureAnnealing (glass)RutileDissociation (chemistry)TitaniumAnalytical Chemistry (journal)CrystallographyChemistryPhysical chemistryNanotechnologyChemical engineeringComputational chemistryOptoelectronicsPhysicsCatalysisMetallurgyQuantum mechanicsBiochemistryOrganic chemistryChromatographyComposite materialEngineeringAdvanced Photocatalysis TechniquesTiO2 Photocatalysis and Solar CellsCopper-based nanomaterials and applications