Shallow trap state-enhanced photocatalytic hydrogen evolution over thermal-decomposed polymeric carbon nitride
Jiawei Xue, Mamoru Fujitsuka, Tetsuro Majima
Abstract
We investigate the photogenerated electron kinetics of a thermal-decomposed polymeric carbon nitride (TCN) synthesized in air using femtosecond time-resolved diffuse reflectance spectroscopy. We find that the oxygen functional groups in TCN contribute to the formation of reactive shallow trap states for photogenerated electrons, leading to an enhanced activity for photocatalytic hydrogen evolution.
Topics & Concepts
PhotocatalysisCarbon nitridePhotochemistryHydrogenMaterials scienceTrap (plumbing)FemtosecondCarbon fibersNitrideKineticsThermalElectronOxygenChemical engineeringChemistryNanotechnologyCatalysisOrganic chemistryLaserComposite materialOpticsPhysicsEngineeringMeteorologyComposite numberLayer (electronics)Quantum mechanicsEnvironmental engineeringAdvanced Photocatalysis TechniquesPerovskite Materials and ApplicationsGa2O3 and related materials