In the present study, we have synthesised and characterised Fe₃O₄-SiO₂ based nanosorbent (Fe₃O₄-SiO₂ BN) using FESEM, EDX, FTIR and powder XRD methods. Synthesised Fe₃O₄-SiO₂ BN was utilised in the adsorption of methylene blue (MB) from aqueous solutions. Optimum conditions for the adsorption of MB by the nanosorbent were found to be 60 min, pH 8 and 1 g dosage of the Fe₃O₄-SiO₂ BN. The equilibrium data of adsorption have been tested with different isotherm and kinetic models and their parameters evaluated. Langmuir isotherm model was best fitted to equilibrium data of adsorption of MB onto Fe₃O₄-SiO₂ BN as compared to Freundlich and Temkin isotherm models. Langmuir equilibrium constant and theoretical mono saturation capacity have been evaluated as 10.277 L/g and 0.0482, respectively. The rate constant (k₂) of adsorption of MB on Fe₃O₄-SiO₂ BN was found as to be 11.049 g/mg min from pseudo second order kinetic model. The photo-catalytic activity of magnetised Fe₃O₄-SiO₂ BN has also been carried out in the presence of electromagnetic radiation and maximum MB degraded as 97.35% after irradiation time 140 min.

在本研究中，我们使用FESEM，EDX，FTIR和粉末XRD方法合成并表征了基于Fe ₃ O ₄ -SiO ₂的纳米吸附剂（Fe ₃ O ₄ -SiO ₂ BN）。合成的Fe ₃ O ₄ -SiO ₂ BN用于从水溶液中吸附亚甲基蓝（MB）。发现纳米吸附剂吸附MB的最佳条件为60分钟，pH 8和1 g Fe ₃ O ₄ -SiO ₂剂量。国阵 用不同的等温线和动力学模型测试了吸附的平衡数据，并评估了其参数。与Freundlich和Temkin等温线模型相比，Langmuir等温线模型最适合MB在Fe ₃ O ₄ -SiO ₂ BN上的吸附平衡数据。Langmuir平衡常数和理论单饱和容量已分别评估为10.277 L / g和0.0482。根据伪二级动力学模型，发现MB在Fe ₃ O ₄ -SiO ₂ BN上的吸附速率常数（k ₂）为11.049 g / mg min。磁化的Fe ₃ O ₄ -SiO的光催化活性在电磁辐射的存在下也进行了₂ BN处理，照射140分钟后最大MB降解为97.35％。