摘要
Herein,UiO-66-NH_(2) nanoparticles were solvothermally immobilized onto Zn_(0.4)Cd_(0.6)S nanorods in varying amounts.The resulting UiO-66-NH_(2)/Zn_(0.4)Cd_(0.6)S hybrid architectures demonstrated UiO-66-NH_(2) contentdependent photocatalytic activity for visible-light-driven hydrogen peroxide(H_(2)O_(2))production from pure water.Notably,the optimized UiO-66-NH_(2)/Zn_(0.4)Cd_(0.6)S-0.2 catalyst achieved the highest H_(2)O_(2) yield under visible-light illumination,surpassing those of pure UiO-66-NH_(2) and bare Zn_(0.4)Cd_(0.6)S by factors of 81.12 and 2.22,respectively.In addition,the UiO-66-NH_(2)/Zn_(0.4)Cd_(0.6)S-0.2 sample exhibited outstanding photocatalytic efficiency,achieving an NH3 concentration of 25.02±0.68 mg L^(−1) after 1 h of visible-light exposure and an H_(2) evolution of 487.12 mmol g^(−1) following 3 h of irradiation.The notable enhancement in the photocatalytic performance was attributed to efficient S-scheme charge transfer,as confirmed by transient absorption spectroscopy.The S-scheme charge migration mechanism in the UiO-66-NH_(2)/Zn_(0.4)Cd_(0.6)S system was further validated by electron paramagnetic resonance,density functional theory calculations,and in situ irradiated X-ray photoelectron spectroscopy.Overall,this study presents a promising strategy for designing highly efficient hybrid architectures for photocatalytic applications.
基金
supported by the Natural Science Foundation of Zhejiang Province(LTGS24E020001,LZY24E020001)
National Natural Science Foundation of China(52102288)
the Project for Science and Technology Innovation Leading Talents of Zhejiang Provincial High-level Talents Special Support Plan(2021R52028)
Open Foundation of State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences(SKLECRA2022OFP03).
