Biopolymer-grafted hydrogel composites based on activated carbon: structural properties, adsorption mechanism, and RSM-BBD optimization

IF 2.8 4区化学 Q3 POLYMER SCIENCE

Journal of Polymer Research Pub Date : 2025-10-03 DOI:10.1007/s10965-025-04575-x

Aseel M. Aljeboree, Uday Abdul-Reda Hussein, Ayad F. Alkaim, Shaima Abd, Forat H. Alsultany, Usama S. Altimari

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引用次数: 0

Abstract

This study presents a novel hydrogel composite synthesized by grafting guar gum with itaconic acid and N-isopropylacrylamide, combined with bio-derived activated carbon. While these components have been individually explored, their unique integration imparts dual pH and temperature-responsive behaviour, significantly enhancing adsorption capacity and regeneration performance compared to conventional hydrogels. Comprehensive characterization through FESEM-EDX, TEM, XRD, FTIR, and BET confirmed the composite’s structural and morphological features conducive to efficient dye adsorption. The adsorption of methylene blue (MB) was systematically evaluated under varying conditions and optimized via response surface methodology (RSM). The hydrogel exhibited a high swelling capacity (SP% = 1100%) and gel content (Gc% = 90%), with adsorption kinetics fitting the pseudo-first-order model and equilibrium data aligning with the Freundlich isotherm, indicating multilayer adsorption on heterogeneous sites. Thermodynamic analysis revealed that the adsorption process is spontaneous and endothermic. Notably, the composite maintained substantial adsorption efficiency after six regeneration cycles, demonstrating excellent reusability. The novelty of this research lies in the strategic design of a dual-responsive natural polymer network functionalized with sustainable activated carbon, yielding a highly effective, reusable adsorbent for dye removal. This composite material offers a promising, eco-friendly approach for treating industrial wastewater contaminated with cationic dyes such as MB dye.

查看原文本刊更多论文

基于活性炭的生物聚合物接枝水凝胶复合材料：结构性能、吸附机理及RSM-BBD优化

本研究采用瓜尔胶接枝衣康酸和n -异丙基丙烯酰胺，结合生物源活性炭合成了一种新型水凝胶复合材料。虽然这些成分已经被单独探索过，但它们独特的整合赋予了双pH和温度响应行为，与传统的水凝胶相比，显著提高了吸附能力和再生性能。通过FESEM-EDX、TEM、XRD、FTIR、BET等综合表征，证实了该复合材料具有有利于染料高效吸附的结构和形态特征。在不同条件下对亚甲基蓝（MB）的吸附进行了系统评价，并通过响应面法（RSM）对其进行了优化。该水凝胶具有较高的溶胀能力（SP% = 1100%）和凝胶含量（Gc% = 90%），吸附动力学符合拟一阶模型，平衡数据符合Freundlich等温线，表明在非均相位点有多层吸附。热力学分析表明，吸附过程是自发的吸热过程。值得注意的是，该复合材料在6次再生循环后仍保持了较高的吸附效率，具有良好的可重复使用性。该研究的新颖之处在于设计了一种双响应的天然聚合物网络，该网络与可持续活性炭功能化，产生了一种高效、可重复使用的染料去除吸附剂。这种复合材料为处理被阳离子染料（如MB染料）污染的工业废水提供了一种有前途的、环保的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Polymer Research 化学-高分子科学

CiteScore

4.70

自引率

7.10%

发文量

472

审稿时长

3.6 months

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology, including: polymer synthesis; polymer reactions; polymerization kinetics; polymer physics; morphology; structure-property relationships; polymer analysis and characterization; physical and mechanical properties; electrical and optical properties; polymer processing and rheology; application of polymers; supramolecular science of polymers; polymer composites.