Facile synthesis of MIL-88A/PVA sponge for rapid tetracycline antibiotics degradation via sulfate radical-advanced oxidation processes.

Utilizing in-situ hydrothermal synthesis, the integration of MIL-88A with self-made PVA sponge was achieved, forming MIL-88A/PVA composite, which demonstrates effective performance in degrading tetracycline antibiotics during water treatment. [Display omitted] • The MIL-88A/PVA sponge composite achieves a high removal rate within 4 min. • MIL-88A/PVA treats 2160 L wastewater in 24 h in fixed-bed column experiments. • The composite's bulk morphology is customized to meet specific industrial requirements. • This approach expands the application of MOF materials in antibiotic wastewater treatment through sulfate radical-advanced oxidation processes. MIL-88A is a metal–organic framework (MOF) material known for its excellent performance in advanced oxidation processes (AOPs). However, due to its powdery nature, MIL-88A may undergo loss during catalytic degradation in flowing solutions, making continuous degradation removal challenging. Herein, we report the synthesis of MIL-88A/PVA sponge composite material by the in-situ integration of MIL-88A with PVA sponge. The composite sponge exhibits excellent removal efficiency of tetracycline antibiotics under the conditions of sulfate radical-advanced oxidation processes (SR-AOPs), achieving a degradation rate exceeding 99.0% within 2 min. Additionally, through fixed-bed column experiments, 1 kg of MIL-88A/PVA can treat 2160 L of wastewater within 24 h, indicating promising industrial applicability. It's worth noting that this material can be customized into any desired block shape as needed. This work offers a highly promising solution for the application of MOF-based bulk-type catalysts in the treatment of antibiotic pollution using SR-AOPs. [ABSTRACT FROM AUTHOR]