异质结
材料科学
光催化
光电流
电场
光电子学
可见光谱
耗尽区
纳米技术
催化作用
化学
半导体
生物化学
物理
量子力学
作者
Meng Liu,Yuting Ning,Meng Ren,Xin Fu,Xuedan Cui,Daibing Hou,Zihan Wang,Jun Cui,Aoxiang Lin
出处
期刊:Small
[Wiley]
日期:2023-07-19
卷期号:19 (46)
被引量:5
标识
DOI:10.1002/smll.202303876
摘要
Inadequate photo-generated charge separation, migration, and utilization efficiency limit the photocatalytic efficiency. Herein, a MoS2 /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 MoS2 . 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 MoS2 /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.
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