Carboxymethyl cellulose-based hydrogel enhanced by two-dimensional montmorillonite nanosheets (CMC-MMTs Gel) has been successfully synthesized throguh polymerization for methylene blue (MB) removal from water. Structure characterization shows that the introduction of two-dimensional montmorillonite nanosheets (2D MMTs) into CMC-based hyddrogel results in a roguh surface and increased porosity. Adsorption tests demonstrate that the adsorption rate and adsorption capacity of CMC-based hydrogel increase significantly with the increase in 2D MMTs content, and a high adsorption capacity of 410 mg g⁻¹ can be reached. After 5 cycles, CMC-MMTs Gel still exhibits good removal performance indicating a good reusability and structural stability. The enhanced MB removal performance and improved structural stability might be due to 2D MMTs and the increased porosity. FTIR and XPS characterizations demonstrate that the adsorption mechanism of MB onto CMC-MMTs Gel might be attributed to electrostatic adsorption and ion-exchange between MB molecules and MMTs, and the interactions between MB molecules and the hydroxyl and carboxyl groups of CMC.

二维蒙脱土纳米片（CMC-MMTs凝胶）增强的基于羧甲基纤维素的水凝胶已经成功地通过聚合反应合成，用于去除水中的亚甲基蓝（MB）。结构表征表明，将二维蒙脱土纳米片（2D MMT）引入基于CMC的水凝胶中会导致坚固的表面和增加的孔隙率。吸附测试表明，CMC基水凝胶的吸附速率和吸附能力随2D MMT含量的增加而显着增加，并具有410 mg g ^-1的高吸附能力可以到达。5个循环后，CMC-MMTs凝胶仍表现出良好的去除性能，表明具有良好的可重复使用性和结构稳定性。MB去除性能的提高和结构稳定性的提高可能归因于2D MMT和孔隙率的提高。FTIR和XPS表征表明，MB在CMC-MMTs凝胶上的吸附机理可能归因于MB分子与MMT之间的静电吸附和离子交换，以及MB分子与CMC的羟基和羧基之间的相互作用。