Internal Electric Field-Modulated Charge Migration Behavior in MoS2 /MIL-53(Fe) S-Scheme Heterojunction for Boosting Visible-Light-Driven Photocatalytic Chlorinated Antibiotics Degradation.

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.

Identification and Characterization of Jingmen Tick Virus in Ticks from Yunnan Imported Cattle.

Jingmen tick virus (JMTV) is a tick-borne segmented positive-sense ssRNA virus that can cause human disease. This virus has been confirmed to be widespread, having a wide host range. In human it can cause fever, headache, lymphadenopathy, and asthenia. Therefore, JMTV poses a threat to public health. In this study, we collected 478 ticks from imported cattle on three quarantine farms near the Yunnan border to detect medically significant tick-borne viruses. Our findings show that JMTV was the only detected virus, with an incidence rate of 56.67%. Phylogenetic analysis showed that our JMTV is more closely related to previously reported JMTV strains from Yunnan Province and neighboring Laos, implying that the tick-borne virus was most likely imported from Laos. In conclusion, we identified and characterized a novel JMTV strain in tick (Rhipicephalus microplus) from Yunnan imported cattle, emphasizing the importance of arbovirus quarantine of livestock imports.