The purpose of this research was to improve the adsorption properties of montmorillonite (MMT) using graphene oxide (GO) and CoFe₂O₄ magnetic nanoparticles for methyl violet (MV) removal. The surface analyses were done on the fresh and used composite. The Langmuir isotherm had more ability to describe data than other studied models (Freundlich, Redlich–Peterson, and Toth). The maximum adsorption capacity of MV by MMT, MMT/CoFe₂O₄, and MMT/GO/CoFe₂O₄ was computed to be 59.61 mg/g, 91.27 mg/g, and 97.26 mg/g, respectively. Obtained data for all adsobers were more consistent with the pseudo-second-order kinetic model (R² > 0.92). The thermodynamic study showed that the MV adsorption by MMT, MMT/CoFe₂O₄, and MMT/GO/CoFe₂O₄ is spontaneous and exothermic. The ad(de)sorption of MV pollutant was studied up to 10 stages. A textile wastewater sample was treated by using the adsober. The MMT/GO/CoFe₂O₄ magnetic composite demonstrates the high adsorption capacity and suitable reusability toward the MV removal from aqueous media.

这项研究的目的是使用氧化石墨烯（GO）和CoFe ₂ O ₄磁性纳米粒子去除甲基紫（MV）来改善蒙脱石（MMT）的吸附性能。对新鲜和使用过的复合材料进行表面分析。与其他研究模型（Freundlich，Redlich-Peterson和Toth）相比，Langmuir等温线具有更多的数据描述能力。计算出的MMT，MMT / CoFe ₂ O ₄和MMT / GO / CoFe ₂ O ₄对MV的最大吸附容量分别为59.61 mg / g，91.27 mg / g和97.26 mg / g。获得的所有吸附剂数据与拟二阶动力学模型（R ² > 0.92）。热力学研究表明，MMT，MMT / CoFe ₂ O ₄和MMT / GO / CoFe ₂ O ₄对MV的吸附是自发放热的。MV污染物的吸附（解吸）研究多达10个阶段。使用吸附剂处理了纺织品废水样品。MMT / GO / CoFe ₂ O ₄磁性复合材料显示出高吸附能力和对从水性介质中除去MV的适宜再利用性。