Modulate 1O2 by passivate oxygen vacancy to boosting the photocatalytic performance of Z-scheme Mo2S3/BiOCl heterostructure
Enhance the concentration of singlet oxygen ( 1 O 2 ) to ameliorate the photocatalytic performance is a promising strategy. Therefore, Z-scheme Mo 2 S 3 /BiOCl heterostructure with rational oxygen vacancies (OVs) was successfully synthesized by in-situ template method to tackle these issues. Characterization results reveal that the OVs were efficiently passivated by forming Mo–O bond at the interface of Mo 2 S 3 and BiOCl. Moreover, the photocatalytic mechanism research reflects that the interfacial electric field not only enhance the spatial separation and migration efficiency of the photo-induced carriers but also benefit producing abundant 1 O 2 , and thus TC-HCl was purified 90.8% in 90 min. Meanwhile, the contribution of the reactive oxygen species to the photocatalytic activity and the formation path of 1 O 2 were comprehensively studied for the first time. This work provides a new avenue to study the formation path of 1 O 2 and offer a polishing strategy to mend the photocatalytic activity by modulate the concentration of 1 O 2 .
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