介孔氧化硅/棉复合纤维对染料的吸附性能

为提高对纺织染料废水的吸附处理能力，利用共缩聚合成法和超支化聚合物修饰制备了复合介孔氧化硅纳米颗粒（HMSN），通过静电自组装法将HMSN 引入阴离子化改性棉纤维表面，制备出了一种基于纤维素纤维以及功能化介孔氧化硅的复合纤维，实现对水溶液中有机染料的高效吸附；对材料表征并对相关吸附性能进行研究。结果表明，介孔氧化硅纳米颗粒呈现虫洞状介孔结构，复合纤维表面被平均粒径约为40 nm的功能化介孔氧化硅纳米颗粒覆盖，形成富含官能基团的复合介孔氧化硅/棉纤维吸附剂，对于水溶液中的染料刚果红有优越的吸附性能，吸附过程在180 min内达到平衡，平衡吸附容量可达195 mg/g。

Adsorption properties of cotton fiber functionalized by mesoporous nanoparticle for dyes

In order to improve adsorption treatment capability for textile wastewater, hybrid mesoporous silica nanoparticles (HMSN) were prepared by copolycondensation and modification with hyperbranched polymer. HMSN were introduced into anion-modified cotton fiber surface by self-assembly, and composite fiber adsorbent based on cellulose fiber and functionalized mesoporous silica was prepared, realizing theefficient adsorptionof organic dyesin aqueous solution. Characterization and adsorption experiments were conducted.The results show that the hybrid fiber surface is covered with mesoporous nanoparticles with an average diameter of 40 nm, forming a mesoporous silica/cotton fiber adsorbent rich infunctional groups. The hybrid fiber adsorbent possesses high-efficiency adsorption for Congo red from aqueous medium. The adsorption equilibrium can be reached within 180 min with a saturated capacity of 195 mg/g.