The excessive discharge of isothiazolinones bacteriostatic agent-containing wastewater has caused serious threat on human health and ecological environment. As one of the most commonly used isothiazolinones, it is necessary and urgent to effective degrade 1,2-benzisothiazolin-3-one (BIT). In the current study, a NH2-MIL-53(Fe)-based adsorptive-photo-Fenton-like system was constructed for efficiently adsorbing and photodegrading BIT under solar light. The equilibrium BIT adsorption capacity Qe of NH2-MIL-53(Fe) reached 1140.89 mg·g-1. The adsorptive-photo-Fenton-like system removal of BIT has achieved more than 90% by NH2-MIL-53(Fe) in the presence of H2O2 under solar light irradiation, and the band gap of NH2-MIL-53(Fe) was calculated to be 2.10 eV by UV-vis result. The influences of pH, dosage of photocatalyst and H2O2 have also been assessed. It was found that H2O2 reduced the recombination of electron-hole pairs, and the radical quenching experiments and EPR testing result verified that h+, •OH and O2•− played a crucial role in the photocatalytic process. This study supports the application of Fe-based MOF materials for simultaneous adsorption and solar light photocatalytic degradation of BIT.

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