Efficient removal of chlortetracycline hydrochloride from water by novel yttrium-based metal-organic gels: Synthesis, kinetics, isotherms and mechanisms

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2025-04-28 DOI:10.1016/j.jssc.2025.125403

Yizhe Wu , Yang Sun , Yiwen Gao , Donglei Zou , Wentian Sun , Yangxue Li

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Abstract

The pervasive presence of antibiotics, particularly chlortetracycline hydrochloride (CTC), in environmental systems presents significant risks, including the contamination of water sources and potential threats to ecological system. Adsorption technology offers a promising solution for CTC remediation. Herein, yttrium-based metal-organic gels (Y-MOGs), synthesized under room conditions, exhibit hierarchical porous structures, which could act as innovative adsorbents for the removal of CTC from aqueous solutions. The study further explored adsorption kinetics, isotherms, and key influencing factors (dosage, pH, ionic strength, and ionic species), revealing that pore-filling effects, π-π interactions, hydrogen bondings, electrostatic interactions and coordination bonds play pivotal roles in the adsorption mechanism. Besides, response surface methodology (RSM) was employed to optimize the adsorption process. Particularly, the Langmuir model showed a maximum adsorption capacity of 238.10 mg·g⁻¹ at 298 K for CTC by Y-MOGs. Overall, this work underscores the structural and functional advantages of Y-MOGs, offering a sustainable and effective approach for addressing CTC-contaminated wastewater.

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新型三元金属有机凝胶对水中盐酸氯霉素的高效去除：合成、动力学、等温线和机理

抗生素，特别是盐酸氯四环素（CTC）在环境系统中的普遍存在带来了重大风险，包括水源污染和对生态系统的潜在威胁。吸附技术为CTC的修复提供了一个很有前途的解决方案。在此，在室温条件下合成的三聚氰胺基金属有机凝胶（Y-MOGs）具有分层多孔结构，可以作为从水溶液中去除CTC的新型吸附剂。研究进一步探讨了吸附动力学、等温线和关键影响因素（剂量、pH、离子强度和离子种类），揭示了孔隙填充效应、π-π相互作用、氢键、静电相互作用和配位键在吸附机理中起关键作用。采用响应面法（RSM）对吸附工艺进行了优化。Langmuir模型显示，Y-MOGs在298 K时对CTC的最大吸附量为238.10 mg·g−1。总之，本研究强调了y - mog的结构和功能优势，为处理ctc污染的废水提供了可持续和有效的方法。

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.