Berichte der Bunsengesellschaft für physikalische Chemie · 1979 · 22 citations · 19 references
Natural SciencesChemistryMaterials ScienceElectrochemistrySemiconductor MaterialsSurface ChemistryElectrode MaterialsPhotoelectrochemistryRedox ChemistryRedox ReactionsSemiconductor InterfacesSemiconductor SurfacesCapacitanceDirect Electron TransferElectrochemical Reaction MechanismsElectrode Reaction KineticsElectrode Reaction MechanismsElectron TransferReactivitySemiconductor Photoelectrodes
Abstract The photoelectrochemical behaviour of several reagents at the SrTiO 3 anode has been investigated. Current‐doubling was found with several reducing agents. By competitive reaction experiments, hole capture was detected with some other reagents. Quantitative data on relative hole reactivities were obtained for several reducing agents, including water. The position of the band edges at the semiconductor surface was deduced from capacitance measurements. The reactivity data are interpreted in terms of the position of electron energy levels at both sides of the surface, and the applicability of the direct electron transfer model to the reactions observed is discussed.
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