Two-step green synthesis of metal organic frameworks-modified cellulose nanofiber for efficient removal of Cu(II) and tetracycline: Experiments, DFT studies, and LCA evaluation

IF 8.5 1区 化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY
Xudong Shen , Bo Chen , Qiaoping Kong , Tianran Ye , Jianjun Lian , Xinyang Wang
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引用次数: 0

Abstract

The coexistence of heavy metals and antibiotics in water bodies poses significant challenges for efficient treatment. This study innovatively utilizes the complementary structure and function of cellulose nanofibers (CNF) and metal-organic frameworks (MOFs), and applies green ultrasound and freeze-drying technology to prepare MOF-CNF composite materials. The results showed that MOF-CNF prepared with a mass ratio of MOF to CNF of 0.2 had the best removal efficiency for tetracycline (TC) and copper (Cu(II)). The adsorption process conforms to the pseudo-second-order kinetic model, Langmuir and Dubinin-Radushkevich isotherms model. Thermodynamic studies indicated that the TC and Cu(II) adsorption was more rapid at a higher temperature. Besides, the coexistence of anions and antibiotics has almost no influence on the adsorption of TC-Cu by MOF-CNF. The electrostatic interaction, hydrogen bonding and complexation were the main mechanisms of TC and Cu(II) adsorption. Furthermore, MOF-CNF composite material demonstrated excellent antibacterial effectiveness. Life Cycle Assessment (LCA) showed that the structural synergy in MOF-CNF composites, reduces overall environmental impact while enhancing sustainability. The MOF-CNF composite material prepared in this study achieved synergistic enhancement of pollutant removal, providing an efficient and sustainable solution for the treatment of heavy metal and antibiotic composite pollutants in water bodies.
两步绿色合成金属有机框架-改性纤维素纳米纤维高效去除Cu(II)和四环素:实验,DFT研究和LCA评价
水体中重金属和抗生素的共存对有效治理提出了重大挑战。本研究创新性地利用纤维素纳米纤维(CNF)和金属有机骨架(mof)的互补结构和功能,应用绿色超声和冷冻干燥技术制备MOF-CNF复合材料。结果表明,MOF与CNF质量比为0.2时制备的MOF-CNF对四环素(TC)和铜(Cu(II))的去除率最高。吸附过程符合拟二级动力学模型Langmuir和Dubinin-Radushkevich等温线模型。热力学研究表明,温度越高,TC和Cu(II)的吸附速度越快。此外,阴离子和抗生素的共存对MOF-CNF对TC-Cu的吸附几乎没有影响。静电相互作用、氢键和络合作用是TC和Cu(II)吸附的主要机理。此外,MOF-CNF复合材料表现出优异的抗菌效果。生命周期评价(LCA)表明MOF-CNF复合材料的结构协同作用在提高可持续性的同时减少了整体环境影响。本研究制备的MOF-CNF复合材料实现了对污染物去除的协同增强,为水体中重金属和抗生素复合污染物的处理提供了高效、可持续的解决方案。
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来源期刊
International Journal of Biological Macromolecules
International Journal of Biological Macromolecules 生物-生化与分子生物学
CiteScore
13.70
自引率
9.80%
发文量
2728
审稿时长
64 days
期刊介绍: The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.
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