An effective method to understand photo-generated charge transfer processes of Z-scheme Ti/α-Fe2O3/g-C3N4 photocatalysts for hydrogen evolution
Rui Zhang, Lingling Bi, Dejun Wang, Yanhong Lin, Xiaoxin Zou, Tengfeng Xie
Abstract
In this respect, surface photovoltage spectrum (SPV) has been employed to analyze the carrier transfer mechanism of Ti/α-Fe2O3/g-C3N4 composite photocatalyst system for the first time. That is, photo-generated carrier interfacial transfer direction is suggested to be the charge driving force between Ti/α-Fe2O3 and g-C3N4, which could determine the Z-scheme carrier transfer mechanism of Ti/α-Fe2O3/g-C3N4 photocatalysts. This work provides an effective method to understand the Z-scheme carrier transfer mechanism and could help us to design more effective Z-scheme photocatalysts systems.
Topics & Concepts
PhotocatalysisCharge carrierSurface photovoltageCharge (physics)Materials scienceMechanism (biology)Scheme (mathematics)Degradation (telecommunications)HydrogenCatalysisComposite numberPhotochemistryNanotechnologyOptoelectronicsChemical physicsChemical engineeringChemistryComputer scienceSpectroscopyPhysicsTelecommunicationsComposite materialMathematicsOrganic chemistryQuantum mechanicsEngineeringBiochemistryMathematical analysisAdvanced Photocatalysis TechniquesCopper-based nanomaterials and applicationsTiO2 Photocatalysis and Solar Cells