Herein, we showed that the graphene oxide with manganese ferrite (GO-MnFe₂O₄) possess great adsorption properties for the selective Pb²⁺ ions removal from the aqueous medium. Nanocomposite adsorbent was developed by one-pot hydrothermal method, using graphene oxide as a supporting material to minimize the aggregation of MnFe₂O4. Also, GO possesses important role in the adsorption mechanism of Pb²⁺ through electrostatic/ionic interactions. The characterizations such as FT-IR, XPS, P-XRD, FE-SEM, and BET of the synthesized nanocomposite were carried out to assess the different properties such as functionalities, crystallinity, morphology, and surface area value, respectively. Thereafter, the adsorption performance of GO-MnFe₂O₄ nanocomposite was tested for the Pb²⁺ at various adsorption parameters including to contact time, solution pH, adsorbent dose, and concentration of initial Pb²⁺ in order to measure the optimum adsorption condition. Kinetic experiments suggest that the equilibrium attained in 30 min and followed a pseudo-second-order kinetic model. Adsorption isotherm model followed to Langmuir isotherms and gives a maximum adsorption capacity of 621.11 mg/g. The reusability tests exhibited good durability and good efficiency for repeated Pb²⁺ adsorptions with GO-MnFe₂O₄ nanocomposite. These results demonstrated that the GO-MnFe₂O₄ nanocomposite may be an attractive adsorbent having low-cost for the effectively Pb⁺² removal of from the polluted water.

在此，我们显示了带有锰铁氧体的氧化石墨烯（GO-MnFe ₂ O ₄）对于从水性介质中选择性去除Pb ²⁺离子具有很大的吸附性能。通过一锅水热法开发纳米复合吸附剂，使用氧化石墨烯作为载体材料，以最大程度地减少MnFe ₂ O4的聚集。另外，GO在Pb ²⁺的吸附机理中也起重要作用通过静电/离子相互作用。对合成的纳米复合材料进行了FT-IR，XPS，P-XRD，FE-SEM和BET等表征，以分别评估其不同的性能，例如功能性，结晶度，形态和表面积值。此后，在接触时间，溶液pH，吸附剂剂量和初始Pb ²⁺浓度等各种吸附参数下，测试了GO-MnFe ₂ O ₄纳米复合材料对Pb ²⁺的吸附性能。为了测量最佳的吸附条件。动力学实验表明，在30分钟内达到了平衡，并遵循了伪二级动力学模型。吸附等温线模型遵循Langmuir等温线，最大吸附容量为621.11 mg / g。可重复使用性测试对于GO-MnFe ₂ O ₄纳米复合材料的Pb ²⁺重复吸附表现出良好的耐久性和效率。这些结果表明，GO-MnFe ₂ O ₄纳米复合材料可能是一种吸引人的吸附剂，其具有从污染水中有效去除Pb ⁺²的低成本。