Development and characterization of fluorescent cellulose succinate hydrogels for efficient chromium adsorption

IF 2.6 4区化学 Q3 POLYMER SCIENCE Journal of Polymer Research Pub Date : 2024-11-04 DOI:10.1007/s10965-024-04164-4

Hebat-Allah S. Tohamy, Mohamed El-Sakhawy, Beata Strachota, Silvia Mares Barbosa, Adam Strachota, Samir Kamel

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Abstract

This study focuses on developing and characterizing of fluorescent cellulose-based hydrogelsfor efficient chromium (Cr(VI)) adsorption. For this purpose, microcrystalline cellulose (MCC) was first surface-modified to achieve solubility using succinic anhydride. Cellulose succinate (CS) subsequently was grafted with a mixture of acrylic acid (AA) and acrylamide (AM), while N,N′-methylene-bis(acrylamide) (MBA) was added as crosslinker to obtain the final grafted and crosslinked hydrogels. To impart fluorescence and sensing capabilities, nitrogen-doped carbon quantum dots (N-CQDs) were synthesized via a microwave-assisted method using sugarcane bagasse, NaOH, and urea as precursors, and incorporated into the hydrogel. The resulting hydrogels demonstrated effective Cr(VI) adsorption, with optimal performance observed at 10% N–CQD loading. FTIR, SEM, rheological analysis, and TGA were employed for hydrogel characterization, while adsorption kinetics provided insights into the interaction mechanisms with Cr(VI).

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用于高效吸附铬的琥珀酸荧光纤维素水凝胶的开发与表征

本研究的重点是开发和表征用于高效吸附铬（Cr(VI)）的荧光纤维素基水凝胶。为此，首先使用琥珀酸酐对微晶纤维素（MCC）进行表面改性，以获得其溶解性。然后用丙烯酸（AA）和丙烯酰胺（AM）的混合物接枝琥珀酸纤维素（CS），再加入 N,N′-亚甲基双（丙烯酰胺）（MBA）作为交联剂，最终得到接枝交联的水凝胶。为了赋予水凝胶荧光和传感功能，使用甘蔗渣、NaOH 和尿素作为前体，通过微波辅助方法合成了掺氮碳量子点（N-CQDs），并将其加入水凝胶中。所得水凝胶能有效吸附 Cr(VI)，在 N-CQD 负载为 10% 时性能最佳。傅立叶变换红外光谱、扫描电子显微镜、流变分析和热重分析被用于水凝胶的表征，而吸附动力学则提供了与六（七）铬相互作用机制的见解。

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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.