In this study, a novel adsorbents, molybdenum disulfide-graphene oxide (MoS₂–GO) composites, is prepared by one-step hydrothermal method and used for U (VI) adsorption. SEM, XRD, FT-IR, BET and XPS results show that the MoS₂ layers grow on the surface of graphene oxide layers, forming MoS₂–GO composite structure. The specific surfaces area of MoS₂–GO composite (5.5 m²/g) is higher than that of MoS₂ (2.3 m²/g). Batch adsorption experiments indicate that the adsorption process of uranium (VI) on MoS₂–GO conforms to the quasi-second-order kinetic model and the adsorption isotherm accords with Langmuir model. The maximum adsorption capacity calculated by Langmuir model is 136 mg·g⁻¹ at pH 5.0 and 298 K. Meanwhile, MoS₂–rGO displays excellent selectivity for U (VI) in multicomponent metal ion solution. The increasement in specific surface area and the introduction of GO that rich in O-containing groups, provide more accessible binding sites for U (VI), which greatly enhance its uranium uptake capability. This work shows the potential of MoS₂–GO as novel and promising materials in the efficient elimination of U (VI) from contaminated water and industrial effluents.

在这项研究中，通过一步水热法制备了一种新型吸附剂二硫化钼-氧化石墨烯（MoS ₂ -GO）复合材料，并用于吸附U（VI）。SEM、XRD、FT-IR、BET和XPS结果表明，MoS ₂层生长在氧化石墨烯层的表面，形成了MoS ₂ -GO复合结构。MoS ₂ -GO复合材料的比表面积（5.5 m ² /g）高于MoS ₂（2.3 m ² /g）。批量吸附实验表明铀（VI）在MoS _{2上的吸附过程}-GO符合准二级动力学模型，吸附等温线符合Langmuir模型。Langmuir 模型计算的最大吸附容量为136 mg·g ^-1在pH 5.0 和298 K 时。同时，MoS ₂ -rGO 在多组分金属离子溶液中对U (VI) 表现出优异的选择性。比表面积的增加和富含含氧基团的 GO 的引入，为 U (VI) 提供了更容易接近的结合位点，从而大大提高了其对铀的吸收能力。这项工作显示了 MoS ₂ -GO 作为新型和有前景的材料在有效去除污染水和工业废水中的 U (VI) 方面的潜力。