In this study, magnetic multi-walled carbon nanotube (MMWCNT) composites were prepared via surface reversible addition fragmentation chain transfer (RAFT) co-polymerization of acrylic acid (AA) and N-isopropyl acrylamide (NIPAM) in the presence of Fe₃O₄ nanoparticles. First, a novel RAFT agent (RA) was prepared and then immobilized onto the surface of MWCNT to fabricate RA-g-MWCNT. Then, Fe₃O₄ nanoparticles were attached onto the surface of RA-g-MWCNT. Finally, RAFT co-polymerization of AA and NIPAM monomers was carried out via Fe₃O₄-g-RA-g-MWCNT RAFT agent. The structure and morphology of the prepared polymer-coated MWCNT was examined by FTIR, SEM, TEM, XRD, VSM, and TGA. The adsorption behaviours of the cationic dyes were studied. The equilibrium isotherm and kinetics of cationic dyes were investigated. Thermodynamics investigations also depicted that the adsorptions of cationic dyes were spontaneous and endothermic in nature. The synthesized dye adsorbent with high adsorption capacities, reusability, and easy recovery makes it as a good candidate for wastewater treatment.

在这项研究中，磁性多壁碳纳米管（MMWCNT）复合材料是通过在Fe ₃ O存在下通过丙烯酸（AA）和N-异丙基丙烯酰胺（NIPAM）的表面可逆加成断裂链转移（RAFT）共聚制备的_4个纳米粒子。首先，制备新型RAFT剂（RA），然后将其固定在MWCNT的表面上以制备RA-g-MWCNT。然后，将Fe ₃ O ₄纳米颗粒附着到RA-g-MWCNT的表面上。最后，通过Fe ₃ O ₄ - g -RA- g进行AA和NIPAM单体的RAFT共聚。-MWCNT RAFT剂。通过FTIR，SEM，TEM，XRD，VSM和TGA检验了制备的聚合物包覆的MWCNT的结构和形态。研究了阳离子染料的吸附行为。研究了阳离子染料的平衡等温线和动力学。热力学研究还表明，阳离子染料的吸附本质上是自发的并且是吸热的。合成的染料吸附剂具有高吸附能力，可重复使用性和易于回收的特性，使其成为废水处理的良好选择。