Metal-organic framework (MOF) exhibited potential in water purification, while the poor water stability limited its applications. In this study, the integration of KOH activation and high-temperature pyrolysis was applied to fabricate ZIF-L derived N-doped porous carbon (NPC) adsorbent. KOH concentration had effect on the physical structure and chemical property of NPC and the NPC-0.5 demonstrated the highest adsorption capacity. The morphology, crystalline phase, composition and pore structure were characterized. KOH activated treatment brought larger surface area and abundant porosity, which were beneficial for the adsorptive reaction. It turned out that the NPC-0.5 with the highest adsorption capacity of 330.98 ​mg ​g⁻¹ towards tetracycline (TC). Effects of the adsorbent dosage, pH values, initial concentrations and co-existing ions on adsorption performance were investigated. The adsorption process was a combination of chemical and physical interactions. Moreover, the NPC-0.5 exhibited high efficiency in removal of various antibiotics (oxytetracycline and chlortetracycline) and can efficiently remove TC from different water bodies (deionized water, tap water and river water). More importantly, after reused for four times, the adsorption property of NPC-0.5 showed a negligible decline. This study proposed a design of fabricating ZIF-derived N-doped porous carbon adsorbent with high performance towards antibiotics-containing wastewater remediation.

金属有机骨架（MOF）在水净化方面显示出潜力，而差的水稳定性限制了其应用。在这项研究中，将KOH活化与高温热解相结合，以制备ZIF-L衍生的N掺杂多孔碳（NPC）吸附剂。KOH浓度对NPC的物理结构和化学性质有影响，NPC-0.5具有最高的吸附能力。表征了形貌，结晶相，组成和孔结构。KOH活化处理带来更大的表面积和丰富的孔隙率，这对于吸附反应是有利的。原来，NPC-0.5的最高吸附容量为330.98 mg g ^-1对四环素（TC）。研究了吸附剂量，pH值，初始浓度和共存离子对吸附性能的影响。吸附过程是化学和物理相互作用的结合。此外，NPC-0.5在去除各种抗生素（土霉素和金霉素）方面表现出很高的效率，并且可以有效地从不同水体（去离子水，自来水和河水中）去除TC。更重要的是，在重复使用四次后，NPC-0.5的吸附性能几乎可以忽略不计。本研究提出了一种制备ZIF衍生的N掺杂多孔碳吸附剂的设计，该吸附剂对含抗生素的废水修复具有高性能。