Internal Electric Field-Modulated Charge Migration Behavior in MoS 2 /MIL-53(Fe) S-Scheme Heterojunction for Boosting Visible-Light-Driven Photocatalytic Chlorinated Antibiotics Degradation.
Meng LiuYuting NingMeng RenXinping FuXuedan CuiDaibing HouZihan WangJun CuiAijun LinPublished in: Small (Weinheim an der Bergstrasse, Germany) (2023)
Inadequate photo-generated charge separation, migration, and utilization efficiency limit the photocatalytic efficiency. Herein, a MoS 2 /MIL-53(Fe) photocatalyst/activator with the S-scheme heterojunction structure is designed and the charge migration behavior is modulated by the internal electric field (IEF). The IEF intensity is enhanced to 40 mV by modulating band bending potential and the depletion layer length of MoS 2 . The photo-generated electron migration process is boosted by constructing the electron migration bridge (Fe-O-S) and modulating the IEF as the driving force, confirmed by the density functional theory calculation. Compared with the pristine materials, the photocurrent density of MoS 2 /MIL-53(Fe) is significantly enhanced 27.5 times. Contributed by the visible-light-driven cooperative catalytic degradation and the high-efficiency direct photo-generated electron reduction dichlorination process, satisfactory chlorinated antibiotics removal and detoxification performances are achieved. This study opens up new insights into the application of heterojunctions in photocatalytic activation of PDS in environmental remediation.
Keyphrases
- visible light
- solar cells
- density functional theory
- high efficiency
- metal organic framework
- electron transfer
- molecular dynamics
- solid phase extraction
- risk assessment
- immune response
- gas chromatography
- mass spectrometry
- single molecule
- human health
- nuclear factor
- polycyclic aromatic hydrocarbons
- quantum dots
- gold nanoparticles
- room temperature
- liquid chromatography
- toll like receptor
- walled carbon nanotubes