This research focuses on removing Direct Blue 71 (DB 71) from aqueous solution in an efficient and very fast route by ionic liquid mediated γ-Fe₂O₃ magnetic ionomer. 2-hydroxyethylammonium sulphonate immobilized on γ-Fe₂O₃ nanoparticles (γ-Fe₂O₃-2-HEAS) was used for this purpose. The influence of shaking time, medium pH, the concentration of sorbent and NaNO₃ on removal was evaluated to greatly influence removal extent. The optimal removal conditions were determined by response surface methodology based on the four-variable central composite design to obtain maximum removal efficiency and determine the significance and interaction effect of the variables on the removal of target triazo dye. The results have shown that an amount of 98.2% as % removal under the optimum conditions. The adsorption kinetics and isotherms were well fitted to a pseudo-second order model and Freundlich model, respectively. Based on these models, the maximum dye adsorption capacity (Q_m) of 47.60 mg g⁻¹ was obtained. Finally, the proposed nano-adsorbent was applied satisfactorily for removal of target triazo dye from different water samples.

该研究集中于通过离子液体介导γ-铁从水溶液中有效和非常快的路径去除直接蓝71（DB 71）₂ ö ₃磁性离聚物。2-羟乙基磺酸盐固定在了γ-Fe _2个ö ₃纳米颗粒（γ-的Fe ₂ ö ₃ -2- HEAS）用于此目的。振荡时间，介质pH值，吸附剂浓度和NaNO _3的影响评价去除率对去除率有很大影响。通过基于四变量中心复合设计的响应面方法确定最佳去除条件，以获得最大去除效率，并确定变量对目标三唑染料去除的意义和相互作用。结果表明，在最佳条件下，去除率为98.2％。吸附动力学和等温线分别很好地拟合了伪二级模型和Freundlich模型。基于这些模型，获得的最大染料吸附容量（Q _m）为47.60 mg g ^-1。最后，所提出的纳米吸附剂可令人满意地用于从不同的水样中去除目标三唑染料。