无机材料学报2025，Vol.40Issue(4)：388-396,9.DOI:10.15541/jim20240382
ZIF-67结构调控及其对盐酸金霉素的吸附性能研究
Structure Regulation of ZIF-67 and Adsorption Properties for Chlortetracycline Hydrochloride
摘要
Abstract
Improper disposal of antibiotics poses significant risks to the aquatic environment.Development of efficient adsorbents for removal of antibiotics in environment is currently an important approach to address this issue.In this study,a series of zeolitic imidazolate framework(ZIF-67)materials with different morphologies were synthesized by adjusting the solvent composition during the synthesis process to investigate their adsorption properties for chlortetracycline hydrochloride(CTC).The results indicate that as the volume ratio of methanol to water decreases,the synthesized ZIF-67 transforms from a rhombic dodecahedral structure to a stacked hexagonal platelet structure which is more favorable for the adsorption of CTC.Based on a detailed investigation of the effects of temperature,solution pH,concentration,and types of impurity ions on the adsorption performance of CTC by ZIF-67 with a stacked hexagonal platelet structure(denoted as ZIF-67-3),the kinetics of the adsorption process indicate that the adsorption process follows both pseudo-second-order kinetic model and Langmuir model.Moreover,ZIF-67-3(at a dosage of 100 mg·L-1)achieved a removal rate of over 90％for CTC(with an initial concentration of 30 mg·L-1)within 20 min,and the maximum CTC adsorption capacity of ZIF-67-3 could reach 1206.58 mg·g-1under neutral conditions.Since ZIF-67-3 primarily adsorbs CTC through interactions such asπ-π/π-cation interaction and hydrogen/coordination bonds,belonging to a monolayer chemical adsorption mechanism,ZIF-67-3 facilitates full exposure of active adsorption sites,thus exhibiting superior CTC adsorption performance.In summary,this study reveals the influence of solvent composition during synthesis on the morphology and structure of ZIF-67,elucidates the adsorption mechanism of ZIF-67-3 adsorbent for CTC,and provides theoretical support for the practical application of ZIF-67 in removal of antibiotic pollution.关键词
ZIF-67/结构调控/盐酸金霉素/化学吸附/吸附动力学Key words
ZIF-67/structure regulation/chlortetracycline hydrochloride/chemical adsorption/adsorption kinetics引用本文复制引用
洪培萍,梁龙,吴炼,马颖康,庞浩..ZIF-67结构调控及其对盐酸金霉素的吸附性能研究[J].无机材料学报,2025,40(4):388-396,9.基金项目
广东省科学院建设国内一流研究机构行动专项资金(2020GDASYL-20200102029) （2020GDASYL-20200102029）
广西石化资源加工及过程强化技术重点实验室开放基金(2022K013)GDAS' Project of Science and Technology Development(2020GDASYL-20200102029) （2022K013）
Opening Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology(2022K013) （2022K013）
