增强Pb2+吸附的PAN/PAMAM@UiO-66-NH2复合纳米纤维膜的制备

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-02-06 DOI:10.1016/j.jwpe.2025.107022

Xiayi Wang , Dongdong Zhang , Zhicheng Ji , Yanze Xu , Yiping Zhao , Manman Xie

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引用次数: 0

摘要

金属有机骨架化合物（mof）越来越被认为是重金属吸附的未来方向，但纳米mof在吸附过程中难以分离和回收，这就需要寻找载体来固定mof材料。采用静电纺丝技术，在聚丙烯腈（PAN）纳米纤维膜上加载PAMAM@UiO-66-NH2粉末，制备了具有高吸附选择性的PAN/PAMAM@UiO-66-NH2复合纳米纤维膜。在pH为5的条件下，负载量为15% PAMAM@UiO-66-NH2的复合纳米纤维膜对铅离子（Pb2+）的吸附效果最好，最大吸附量为203.4 mg/g。吸附动力学研究结果表明，Pb2+在PAN/PAMAM@UiO-66-NH2复合纳米纤维膜上的吸附行为倾向于吸热化学吸附，这可能与氨基的配位螯合有关。因此，PAN/PAMAM@UiO-66-NH2复合纳米纤维膜在Cu2+、Zn2+、Mg2+、Ni2+、Cd2+等金属离子存在时，仍具有良好的选择性吸附Pb2+。此外，制备的PAN/PAMAM@UiO-66-NH2复合纳米纤维膜具有良好的循环利用性能，是水处理中重金属离子吸附剂的理想候选材料。

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Facile fabrication of PAN/PAMAM@UiO-66-NH2 composite nanofiber membranes for enhanced Pb2+ adsorption

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Facile fabrication of PAN/PAMAM@UiO-66-NH2 composite nanofiber membranes for enhanced Pb2+ adsorption

Metal organic framework compounds (MOFs) are increasingly considered as the future direction for heavy metal adsorption, but nanoscale MOFs are difficult to separate and recover during the adsorption process, which requires finding a carrier to fix the MOFs materials. In this paper, we demonstrated electrospinning technology to prepare PAN/PAMAM@UiO-66-NH₂ composite nanofiber membrane with high adsorption selectivity by loading PAMAM@UiO-66-NH₂ powder into polyacrylonitrile (PAN) nanofiber membrane. Under the condition of pH 5, the composite nanofiber membrane with a loading capacity of 15 % PAMAM@UiO-66-NH₂ exhibited the best adsorption effect for lead ions (Pb²⁺), with a maximum adsorption capacity of 203.4 mg/g. The results of adsorption kinetics research indicated that the adsorption behavior of Pb²⁺ on PAN/PAMAM@UiO-66-NH₂ composite nanofiber membrane tend to be endothermic chemical adsorption, which may be related to the coordination chelation of amino groups. Therefore, PAN/PAMAM@UiO-66-NH₂ composite nanofiber membranes still exhibited good selective adsorption of Pb²⁺ in the presence of other metal ions, such as Cu²⁺, Zn²⁺, Mg²⁺, Ni²⁺ and Cd²⁺. In addition, the prepared PAN/PAMAM@UiO-66-NH₂ composite nanofiber membrane exhibited good recycling performance, making it an excellent candidate for heavy metal ion adsorbents in water treatment applications.

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies