Effective removal of tetracycline hydrochloride antibiotics (TC) from aqueous solution has received widespread attention in the field of wastewater treatment. In this work, a Zr(VI)-based metal organic framework UiO-66-(COOH)₂/GO composite was prepared and then used for TC adsorption. The maximum adsorption capacity of UiO-66-(COOH)₂/GO reached 164.91 mg/g, with approximately five-fold higher than that of UiO-66 (27.53 mg/g). The enhanced adsorption performance of UiO-66-(COOH)₂/GO is predominantly attributed to increased adsorption active sites caused by the introduction of GO and carboxyl groups. Particularly, the UiO-66-(COOH)₂/GO adsorbent is pH-universal, showing ultra-high acid-base adsorption stability in acidic, alkaline and neutral media (i.e pH 1–11). The precursor amplification experiment proved the scalable preparation of UiO-66-(COOH)₂/GO. Besides, adsorption behaviors were explored, including adsorption kinetics, isotherms and thermodynamics, effect of pH and coexisting ions. The possible adsorption mechanism is proposed on account of π-π interaction, chemical coordination, and weak electrostatic interaction between UiO-(COOH)₂/GO and TC.

从水溶液中有效去除盐酸四环素类抗生素（TC）已在废水处理领域引起广泛关注。在这项工作中，制备了基于Zr（VI）的金属有机骨架UiO-66-（COOH）₂ / GO复合材料，然后将其用于TC吸附。UiO-66-（COOH）₂ / GO的最大吸附容量达到164.91 mg / g，比UiO-66（27.53 mg / g）高约五倍。UiO-66-（COOH）₂ / GO的增强吸附性能主要归因于GO和羧基的引入引起的吸附活性位的增加。特别是UiO-66-（COOH）₂/ GO吸附剂的pH值通用，在酸性，碱性和中性介质（即pH 1-11）中显示出超高的酸碱吸附稳定性。前体扩增实验证明了可扩展制备UiO-66-（COOH）₂ / GO。此外，还探讨了吸附行为，包括吸附动力学，等温线和热力学，pH值和共存离子的影响。鉴于π-π相互作用，化学配位以及UiO-（COOH）₂ / GO与TC之间弱的静电相互作用，提出了可能的吸附机理。