In current study, a novel adsorbent of CuFe₂O₄/CuS magnetic nanocomposite (MNC) was constructed via a green approach for tetracycline (TC) removal. The leaf extract of the Alhagi pseudalhagi plant was employed as a green reductant agent. The features of the nanocomposite were characterized using XRD, FTIR, FESEM, TEM, BET, and VSM. Batch studies were conducted to assess the impact of parameters, including pH (3.0–9.0), adsorbent dosage (0.025–2 g/L), TC concentration (5–100 mg/L), and temperature (5–50 °C) on the TC adsorption efficiency. The antibiotic was fully removed at pH 7.0, nanocomposite dose of 1.5 g/L, time of 200 min, and TC content of 5 mg/L. Based on the thermodynamic study, the TC adsorption onto the CuFe₂O₄/CuS MNC occurred spontaneously and was primarily driven by physical interactions (physisorption). Positive values of ∆H° (enthalpy change) and ∆S° (entropy change) demonstrated that the adsorption process is naturally endothermic, and the degree of dispersion improves with rising temperature. Adsorption kinetics was well fitted by the pseudo-second-order model. The isotherm studies showed that TC can be removed by the adsorbent at a maximum of 31 mg/g. Overall, CuFe₂O₄/CuS MNC exhibited notable efficacy and cost-effectiveness (reusability: 5 times) for the TC adsorption from water.

在目前的研究中，通过绿色方法构建了一种新型的 CuFe₂O₄/CuS 磁性纳米复合材料 （MNC） 吸附剂，用于去除四环素 （TC）。Alhagi pseudalhagi 植物的叶提取物被用作绿色还原剂。使用 XRD、FTIR、FESEM、TEM、BET 和 VSM 表征了纳米复合材料的特性。进行了批量研究以评估 pH 值 （3.0–9.0）、吸附剂用量 （0.025–2 g/L）、TC 浓度 （5–100 mg/L） 和温度 （5–50 °C） 等参数对 TC 吸附效率的影响。在 pH 7.0、纳米复合剂量为 1.5 g/L、时间 200 min、TC 含量为 5 mg/L 时完全去除抗生素。基于热力学研究，TC 对 CuFe₂O₄/CuS MNC 的吸附是自发发生的，主要由物理相互作用（物理吸附）驱动。∆H°（焓变）和 ∆S°（熵变）的正值表明吸附过程是自然吸热的，分散程度随着温度的升高而提高。伪二级模型很好地拟合了吸附动力学。等温线研究表明，吸附剂可以以最大 31 mg/g 的速度去除 TC。总体而言，CuFe₂O₄/CuS MNC 在从水中吸附 TC 方面表现出显着的功效和成本效益（可重复使用性：5 倍）。