Metal-organic framework (MOF) materials have been extensively studied in the removal of pollutants in wastewater. However, MOFs, which are usually in powder form, suffer from complex separation that hinder their practical application. Herein, a composite adsorbent material, ZIF-67@WA (wood aerogel), has been successfully fabricated through in-situ anchoring of ZIF-67 rhombic dodecahedron on the wood aerogel obtained by selectively removing lignin and hemicellulose from natural wood. WA with lamellar structure provided sufficient attachment sites for ZIF-67, and the content of ZIF-67 in the composite reached 32.65 wt%. ZIF-67 with 1 μm in grain size maintained its crystallinity when it was introduced to the surface of WA. The effects of pH, contact time, initial concentration, temperature, coexisting ions and humic acid on tetracycline (TC) adsorption were investigated. The composite showed excellent TC adsorption capacity (273.84 mg·g⁻¹ at 298 K), which was comparable to most previously reported adsorbents. Pseudo-second-order kinetic model and Langmuir isotherm model described the adsorption process well. Adsorption thermodynamic studies implied that the adsorption process was spontaneous and endothermic. Furthermore, the possible adsorption mechanism was proposed. The TC removal efficiency dropped from 94.09% to 80.27% after 3 cycles, revealing the composite could be recycled. The leaching of cobalt was measured to be within the permissible range, indicating that no serious secondary contamination would be caused during using the composite. The superior adsorption performance coupled with compressibility, light weight and facile separation gave ZIF-67@WA the potential to effectively remove TC from water.

金属有机框架（MOF）材料已被广泛研究去除废水中的污染物。然而，通常为粉末形式的MOF遭受复杂的分离，这阻碍了它们的实际应用。在此，通过将ZIF-67菱形十二面体原位锚定在通过选择性地从天然木材中除去木质素和半纤维素而获得的木材气凝胶上，已经成功地制造了复合吸附材料ZIF-67 @ WA（木材气凝胶）。具有层状结构的WA为ZIF-67提供了足够的附着位点，并且复合物中ZIF-67的含量达到32.65wt％。引入到WA表面时，晶粒尺寸为1μm的ZIF-67保持其结晶度。pH，接触时间，初始浓度，温度，研究了共存离子和腐殖酸对四环素（TC）的吸附作用。该复合材料具有优异的TC吸附能力（273.84 mg·g）在298 K时为^-1），与大多数以前报道的吸附剂相当。伪二级动力学模型和Langmuir等温模型很好地描述了吸附过程。吸附热力学研究表明吸附过程是自发的并且是吸热的。此外，提出了可能的吸附机理。3个循环后，TC去除效率从94.09％降至80.27％，表明该复合材料可以回收利用。钴的浸出被测量为在允许的范围内，表明在使用复合材料期间不会引起严重的二次污染。ZIF-67 @ WA具有出色的吸附性能，可压缩性，重量轻和易于分离的特点，因此具有从水中有效去除TC的潜力。