Facile green fabrication of MIL‐101(Cr)/PVA nanofiber composite as effective, stable, and reusable adsorbent for cationic dye removal

IF 3.2 4区 工程技术 Q2 ENGINEERING, CHEMICAL Polymer Engineering and Science Pub Date : 2024-08-14 DOI:10.1002/pen.26922
Badr M. Thamer, Faiz A. Al‐aizari, Hany S. Abdo, Mohamed H. El‐Newehy
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Abstract

In this study, chromium‐based metal–organic framework (MIL‐101(Cr)) was incorporated into polyvinyl alcohol nanofibers (PVA NFs) via green electrospinning followed by heat treatment to fabricate MIL‐101(Cr)@PVA NFs composite without the need for any organic solvent or other dispersants. The fabricated MIL‐101(Cr)@PVA NFs were comprehensively characterized using a suite of common techniques. Morphological characteristics of MIL‐101(Cr)@PVA NFs showed a fibrous structure with an average diameter of 228 ± 37 nm and decorated with MIL‐101(Cr) particles arranged in a nanoneedle‐like pattern. Subsequently, its adsorption efficiency towards the cationic crystal violet dye (CV) was evaluated through batch adsorption experiments. The influence of various experimental parameters on CV removal efficiency was systematically optimized using a factorial design approach. The Langmuir isotherm and kinetic pseudo‐second‐order (PSO) model provided an excellent fit to the adsorption equilibrium data, indicating a maximum adsorption capacity (qmax) of 344.18 mg/g for MIL‐101(Cr)@PVA NFs compared with 83.94 mg/g for pristine PVA NFs. Furthermore, the MIL‐101(Cr)@PVA NFs composite demonstrated excellent reusability and stability, maintaining a significant portion of its removal capacity even after six adsorption–desorption cycles. These findings highlight the potential of the fabricated composite as a highly efficient and reusable adsorbent for CV removal from wastewater treatment applications.Highlights The MIL‐101(Cr)@PVA NFs nanocomposite fabricated by electrospinning technique. The MIL‐101(Cr) particle arranged in a nanoneedle‐like pattern in the PVA NFs. Incorporation of MIL‐101(Cr) improved qmax of PVA by 391.5%. The MIL‐101(Cr)@PVA NFs membrane has excellent stability and reusability.
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绿色简便地制备 MIL-101(Cr)/PVA 纳米纤维复合材料,作为有效、稳定、可重复使用的阳离子染料去除吸附剂
在这项研究中,通过绿色电纺丝技术将铬基金属有机框架(MIL-101(Cr))与聚乙烯醇纳米纤维(PVA NFs)结合,然后进行热处理,制备出 MIL-101(Cr)@PVA NFs 复合材料,无需使用任何有机溶剂或其他分散剂。利用一系列常用技术对制备的 MIL-101(Cr)@PVA NFs 进行了全面表征。MIL-101(Cr)@PVA NFs 的形态特征显示出平均直径为 228 ± 37 nm 的纤维状结构,其上装饰有呈纳米针状排列的 MIL-101(Cr)颗粒。随后,通过批量吸附实验评估了其对阳离子水晶紫染料(CV)的吸附效率。采用因子设计法对各种实验参数对 CV 去除效率的影响进行了系统优化。朗缪尔等温线和动力学伪二阶(PSO)模型对吸附平衡数据进行了很好的拟合,表明 MIL-101(Cr)@PVA NFs 的最大吸附容量(qmax)为 344.18 mg/g,而原始 PVA NFs 的吸附容量为 83.94 mg/g。此外,MIL-101(Cr)@PVA NFs 复合材料还表现出极佳的可重复使用性和稳定性,即使经过六个吸附-解吸循环后,仍能保持相当大一部分的去除能力。这些发现凸显了所制备的复合材料作为一种高效、可重复使用的吸附剂用于去除废水处理中的 CV 的潜力。MIL-101(Cr) 颗粒在 PVA NFs 中呈纳米针状排列。MIL-101(Cr)的加入使 PVA 的 qmax 提高了 391.5%。MIL-101(Cr)@PVA NFs 膜具有出色的稳定性和可重复使用性。
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来源期刊
Polymer Engineering and Science
Polymer Engineering and Science 工程技术-高分子科学
CiteScore
5.40
自引率
18.80%
发文量
329
审稿时长
3.7 months
期刊介绍: For more than 30 years, Polymer Engineering & Science has been one of the most highly regarded journals in the field, serving as a forum for authors of treatises on the cutting edge of polymer science and technology. The importance of PE&S is underscored by the frequent rate at which its articles are cited, especially by other publications - literally thousand of times a year. Engineers, researchers, technicians, and academicians worldwide are looking to PE&S for the valuable information they need. There are special issues compiled by distinguished guest editors. These contain proceedings of symposia on such diverse topics as polyblends, mechanics of plastics and polymer welding.
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