2024
Electron Transfer Dynamics at Dye-Sensitized SnO2/TiO2 Core/Shell Electrodes in Aqueous/Nonaqueous Electrolyte Mixtures
Xiao L, Spies J, Sheehan C, Zeng Z, Gao Y, Gao T, Ehrlacher A, Zuerch M, Brudvig G, Mallouk T. Electron Transfer Dynamics at Dye-Sensitized SnO2/TiO2 Core/Shell Electrodes in Aqueous/Nonaqueous Electrolyte Mixtures. Journal Of The American Chemical Society 2024, 146: 18117-18127. PMID: 38900942, DOI: 10.1021/jacs.4c05187.Peer-Reviewed Original ResearchFlat band potentialOptical-pump terahertz-probe spectroscopyTransient absorption spectroscopyCore/shell electrodesSolvent electrolytesElectron transferElectron injectionBand potentialDynamics of photoinduced electron transferNanosecond transient absorption spectroscopyNegative flat band potentialSemiconductor flat-band potentialDye-sensitized photoanodeOxidized dye moleculesPhotoinduced electron injectionPhotoinduced electron transferElectron transfer dynamicsElectron injection efficiencySlow electron transferInjection efficiencyIncreasing acetonitrile concentrationConcentration of acetonitrileIncreasing concentrations of acetonitrileConduction band electronsCharge separation
2021
Tuning the Conduction Band for Interfacial Electron Transfer: Dye-Sensitized Sn x Ti1–x O2 Photoanodes for Water Splitting
Spies J, Swierk J, Kelly H, Capobianco M, Regan K, Batista V, Brudvig G, Schmuttenmaer C. Tuning the Conduction Band for Interfacial Electron Transfer: Dye-Sensitized Sn x Ti1–x O2 Photoanodes for Water Splitting. ACS Applied Energy Materials 2021, 4: 4695-4703. DOI: 10.1021/acsaem.1c00305.Peer-Reviewed Original ResearchDFT calculationsAbsorption spectroscopyInterfacial electron transfer dynamicsUltrafast transient absorption spectroscopyInterfacial electron transferElectron transfer dynamicsUltrafast electron injectionConduction bandPeriodic DFT calculationsTransient absorption spectroscopyLinear absorption spectroscopyDye sensitizersWater splittingElectron transferTransfer dynamicsComposition of SnElectron acceptorAbsorption spectraElectron injectionD characterElectronic statesSpectroscopyPhotoanodeSnDye