Fabrication of PES membrane loaded with Fe, Ni-BMOF/g-C3N4 nanomaterials and investigation of photocatalytic removal, antifouling and permeability properties in cephalexin aqueous solution

IF 7.1 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Advances Pub Date : 2025-09-15 DOI:10.1016/j.ceja.2025.100872

Shahnaz Nayeri, Jalal Basiri Parsa

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Abstract

PES/g-C₃N₄−MIL88B (Fe, Ni) composite membrane was created by growing the crystals of bimetal-organic frameworks MIL88B (Fe, Ni) on g-C₃N₄ nanosheets by hydrothermal method as a new photocatalyst. These nanoparticles were used in the polyethersulfone-based membrane matrix in the Cross-flow ultrafiltration system was used to degrade cephalexin antibiotics (CPX) under visible light irradiation. The heterogeneous structures formed between MIL88B (Fe, Ni) and g-C₃N₄, improved the photocatalytic performance, electron-hole separation and antifouling properties of the PES/g-C₃N₄−MIL88B (Fe, Ni) composite membrane. Under visible light irradiation, compared to PES/g-C₃N₄ and PES/MIL88B (Fe, Ni), the composite membrane of PES-g-C₃N₄/MIL88B (Fe, Ni) exhibited greater photocatalytic activity. CPX removal efficiency of 72 % and pure water flux of 720 kg/m².h was reported by PES/g-C₃N₄−MIL88B (Fe, Ni) membrane. This research showed that the photocatalytic membrane reactor (PMR) is an effective and sustainable system for wastewater treatment.

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Fe、Ni-BMOF/g-C3N4纳米材料负载PES膜的制备及其在头孢氨苄水溶液中的光催化去除、防污和渗透性能研究

采用水热法在g-C3N4纳米片上生长双金属有机骨架MIL88B （Fe, Ni）晶体，制备了PES/g-C3N4 - MIL88B （Fe, Ni）复合膜作为新型光催化剂。将这些纳米颗粒应用于聚醚砜基膜基质中，在可见光照射下采用交叉流超滤系统降解头孢氨苄抗生素（CPX）。MIL88B （Fe, Ni）与g-C3N4之间形成的非均相结构提高了PES/g-C3N4 - MIL88B （Fe, Ni）复合膜的光催化性能、电子空穴分离性能和防污性能。在可见光照射下，与PES/g-C3N4和PES/MIL88B （Fe, Ni）相比，PES-g-C3N4/MIL88B （Fe, Ni）复合膜表现出更高的光催化活性。PES/g-C3N4−MIL88B （Fe, Ni）膜对CPX的去除率为72%，纯水通量为720 kg/m2.h。研究表明，光催化膜反应器（PMR）是一种高效、可持续的污水处理系统。

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