Abstract
AbstractA novel visible‐light‐driven MoS2/BiOBr composite material is prepared in situ under normal temperature and pressure conditions through the efficient, green and energy‐saving ionic liquid‐assisted mechanical ball milling method. Under visible light irradiation, the MoS2/BiOBr composite exhibits enhanced photocatalytic degradation tetracycline (TC) activity than that of BiOBr monomer. Among them, 1.0 wt % MoS2/BiOBr exhibits the best photocatalytic degradation activity and can degrade 68 % of TC within 120 min, which is 30 % improvement in performance compared to BiOBr monomer. The introduction of MoS2 promotes the photocatalytic performance of the composite material, which is mainly attributed to the increased specific surface area, enhanced visible light absorption capacity and excellent photo‐generated carrier separation and transfer efficiency. Electron spin resonance, radical trapping experiments and XPS valence band spectroscopy confirmed that superoxide radicals and holes are the main active species in the photocatalytic process.
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