聚乙烯醇改性可回收果胶基纳米纤维的合成及其对铜离子的吸附

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-09-24 DOI:10.1016/j.mseb.2025.118831

Yuhao Wu , Xiaoqing Deng , Jiawei Liu , Jiancheng Huang , Jianxin Liu , Xiaolei Zhang , Yue Lu , Xiang Li

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引用次数: 0

摘要

本研究以果胶（Pec）和聚乙烯醇（PVA）为基体材料，戊二醛（GA）为交联剂，通过静电纺丝法制备Pec/PVA复合纳米纤维去除Cu2+。SEM、FTIR和XRD表征表明，果胶比的增加使纤维直径减小，GA交联使纤维具有良好的耐水性。吸附动力学、等温线和热力学拟合结果表明，吸附过程以化学吸附和单层覆盖为主，为放热过程。主要机理被确定为离子交换和配位，伴随着静电相互作用。该材料具有良好的力学性能和生物相容性，在5次再生循环后仍保持80%的吸附量。综上所述，制备的Pec/PVA纳米纤维具有良好的可加工性和较高的吸附活性，在去除废水中的重金属方面具有很大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Synthesis of recyclable pectin-based nanofibers modified with polyvinyl alcohol and their adsorption of copper ions

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Synthesis of recyclable pectin-based nanofibers modified with polyvinyl alcohol and their adsorption of copper ions

This study utilized pectin (Pec) and polyvinyl alcohol (PVA) as matrix materials, with glutaraldehyde (GA) as the crosslinking agent, to fabricate Pec/PVA composite nanofibers via electrospinning for Cu²⁺ removal. Characterization by SEM, FTIR, and XRD revealed that increasing the pectin ratio reduced the fiber diameter, and GA crosslinking imparted excellent water resistance to the fibers. Fitting results from adsorption kinetics, isotherms, and thermodynamics indicated that the adsorption process was exothermic, dominated by chemical adsorption and monolayer coverage. The primary mechanisms were identified as ion exchange and coordination, accompanied by electrostatic interactions. The material exhibited good mechanical properties and biocompatibility, retaining 80 % of its adsorption capacity after 5 regeneration cycles. In summary, the prepared Pec/PVA nanofibers combine excellent processability with high adsorption activity, demonstrating significant potential for application in removing heavy metals from wastewater.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.