Antibiotic pollution in aquatic environments has become a critical global challenge for efficient water purification, posing severe threats to ecological safety and public health worldwide. Traditional adsorption separation technologies suffer from inherent bottlenecks including easy adsorption site saturation, difficult ex-situ regeneration, and secondary pollution risk, while single photocatalytic technology is limited by poor target pollutant enrichment capacity and interfacial mass transfer efficiency, making these technologies hard to achieve deep and efficient water purification. In this study, two donor-acceptor (D-A) type conjugated microporous polymers (CMPs), named benzo[1,2-d:4,5-d']bisthiazolylphenylbenzene-based conjugated microporous polymer (BTB-CMP) and benzo[1,2-d:4,5-d']bisthiazolylphenylpyrene-based conjugated microporous polymer (BTP-CMP), were synthesized via solution polycondensation. The design strategy aims to extend the conjugated aromatic area of the monomers as much as possible, within the constraints of maintaining a synergistic balance. Among them, BTB-CMP demonstrates exceptional performance, achieving 99% removal of oxytetracycline (OTC) within 10 min under optimal pH conditions. Moreover, BTB-CMP exhibits broad-spectrum activity against a range of commonly encountered antibiotics, and remains effective across a wide range of pH values and pollutant concentrations, showing great potential for the purification of antibiotic wastewater. This work elucidates the molecular-level balance between monomer conjugation area and torsion angle in modulating the adsorption, photocatalytic activity, and hydrophilicity of CMPs. Furthermore, the degradation mechanism and plausible pathways were systematically investigated, offering both theoretical insights and experimental support for the rational design of high-efficiency functional materials for water purification applications.
更多
原文链接
分享
引用
