文献类型：期刊文献

英文题名：Facile synthesis of sodium alginate-based/nano-montmorillonite composite core-shell hydrogels for effective removal of methylene blue

作者：Han, Yuxuan[1];Yuan, Yizhong[1];Sun, Jinyu[1];Tian, Xiaohui[1];Yu, Huimei[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Special Funct Polymer Mat & Related Techno, Minist Educ, Shanghai, Peoples R China

年份：2026

卷号：304

期号：2

起止页码：391

外文期刊名：COLLOID AND POLYMER SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001617955700001)】；

基金：This work was supported by the National Natural Science Foundation of China (52073095) and Program of Shanghai Academic Research Leader (23XD1420900).

语种：英文

外文关键词：Sodium alginate; Montmorillonite; Methylene blue; Adsorption

摘要：The treatment of dye wastewater necessitates efficient and sustainable adsorbents. In this study, a novel sodium alginate/carrageenan/montmorillonite@carboxymethyl cellulose nanofiber (SA/CRG/MMt@CMCNF) core-shell hydrogel, containing abundant adsorption sites, was synthesized via a facile ion-crosslinking method for effective methylene blue (MB) removal. The surface characteristics including morphology, functional groups, and pore distribution of the SA/CRG/MMt@CMCNF hydrogel were analyzed. FTIR, BET, and XPS analyses revealed that the addition of MMt provided more adsorption sites. The composite hydrogel exhibited a maximum adsorption capacity of 228.83 mgg- 1 under optimal conditions and was well-described by both the pseudo-second-order kinetic model and Langmuir isotherm model. Furthermore, it maintained 75% MB removal efficiency after five adsorption cycles. To our knowledge, this study introduces the first incorporation of CMCNF and MMt into the SA/CRG composite system to form a core-shell hydrogel for MB adsorption. Overall, the SA/CRG/MMt@CMCNF hydrogel offers several advantages, including a simple production process, low cost, high adsorption capacity, and good recyclability. This research presents a design strategy for multifunctional hydrogel composites incorporating nanomaterials, providing novel insights into the development of dye treatment technologies.