Nowadays, environmental pollution has increasingly serious effects to human health, especially water pollution. Heavy metals and organic dyes are major environmental pollutants. In this study, manganese ferrite/graphene oxide (MnFe₂O₄/GO) nanocomposites were fabricated by in situ method and used as an adsorbent for the removal of nickel ions (Ni²⁺), methylene blue (MB) from water. The MnFe₂O₄/GO nanocomposite with a mass ratio of MnFe₂O₄ to GO of 1:1 (FGO2) had high adsorption capacity and was easily separated by external magnetic field. The adsorption data of FGO2 fitted well with a pseudo-second-order kinetic and Langmuir isotherm models. The maximum adsorption capacities of FGO2 for Ni²⁺ and MB were determined to be 152.67 and 89.29 mg/g, respectively. MnFe₂O₄/GO nanocomposite was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, Brunauer-Emmett-Teller (BET) specific surface area, and vibrating sample magnetometer (VSM). FGO2 had the BET specific surface area of 78.46 m²/g and VSM of 28.74 emu/g. Based on these results, the FGO2 could be considered as a highly efficient adsorbent for removing Ni²⁺, MB from water.

如今，环境污染对人类健康的影响日益严重，尤其是水污染。重金属和有机染料是主要的环境污染物。本研究采用原位法制备锰铁氧体/氧化石墨烯（MnFe ₂ O ₄ / GO）纳米复合材料，并作为吸附剂从水中去除镍离子（Ni ²⁺），亚甲基蓝（MB）。所述锰铁₂ ö ₄ / GO纳米复合材料与锰铁的质量比₂ Ò ₄至GO的1：1（FGO2）具有高的吸附容量和容易被外部磁场分离。FGO2的吸附数据与拟合良好伪二阶动力学和Langmuir等温模型。FGO2对Ni ²⁺和MB的最大吸附容量分别确定为152.67和89.29 mg / g。MnFe ₂ O ₄ / GO纳米复合材料的特征在于傅立叶变换红外光谱，X射线衍射，透射电子显微镜，Brunauer-Emmett-Teller（BET）比表面积和振动样品磁力计（VSM）。FGO 2的BET比表面积为78.46m ² / g，VSM为28.74emu / g。基于这些结果，FGO 2被认为是从水中去除Ni 2 ⁺，MB的高效吸附剂。