金属有机骨架材料作为新兴的多孔结构材料，具有高比表面积、高孔隙率等结构特性，对水中污染物表现出优良的吸附性能，在水处理中作为吸附剂的应用得到广泛关注。本论文以有机染料与重金属离子作为污染物研究对象，以甲基橙、亚甲基蓝、三价铬离子作为代表性污染物，以金属有机骨架材料及其与氧化石墨烯的复合材料作为吸附剂，研究了金属有机骨架材料对有机染料与重金属离子的吸附性能及氧化石墨烯复合对吸附性能的影响。本论文获得以下几点主要结论（1）通过水热法制备了金属有机骨架材料MIL-100(Fe)及其与氧化石墨烯的复合材料GO/MIL-100(Fe)，制备的MIL-100(Fe)具有较高的比表面积（1690 m2/g）与孔隙率（0.996 cm3/g）。复合氧化石墨烯后材料中MIL-100(Fe)的晶体结构被完整保留，复合材料具有特殊的夹层状结构，薄膜状的氧化石墨烯充当隔层，MIL-100(Fe)晶体作为填充物分布于层间。复合材料的热稳定性相比于复合前有所提升，同时比表面积与孔隙率发生下降。（2）制备的MIL-100(Fe)对有机染料亚甲基蓝与甲基橙具有优良的吸附性能，对二者的最大吸附容量分别达到1018.79 mg/g与666.67 mg/g，吸附性能要高于活性碳、碳纳米管等传统吸附剂。MIL-100(Fe)对亚甲基蓝和甲基橙的吸附过程均符合拟二级动力学与朗格缪尔模型，对于亚甲基蓝的吸附属于自发进行的吸热熵增过程，随温度的升高吸附量逐渐上升，对甲基橙的吸附属于自发进行的放热熵减过程，随温度的升高吸附量逐渐降低。（3）适量氧化石墨烯的复合能够有效提升使材料对有机染料的吸附性能，在氧化石墨烯质量分数为5%时，复合材料对亚甲基蓝与甲基橙的最大吸附容量分别提高至1230.74 mg/g与1189.06 mg/g，相比于未复合前分别提升了21%和78%，并且吸附剂的重复利用能力也得到提升。随着氧化石墨烯含量进一步增加，复合材料的吸附性能出现下降。（4）MIL-100(Fe)对重金属离子Cr(III)的吸附过程符合拟二级动力学模型，与弗兰德里希模型。在Cr(III)与亚甲基蓝共存的竞争吸附环境下，MIL-100(Fe)对亚甲基蓝的吸附能力要强于Cr(III)，吸附剂表现出对亚甲基蓝的优先吸附。

As an emerging porous material, metal organic frameworks (MOFS) have structural characteristics such as high surface area and high porosity. MOFs have been receiving increasing attention as an absorbent in water treatment, due to their excellent adsorption performance on pollutants in water. In this paper, organic dyes and heavy metal ions were used as contaminants, methyl orange (MO), methylene blue (MB) and Cr(III) were used as representative pollutants. Metal organic frameworks and their composites with graphene oxide (GO) were used as adsorbents to study the adsorption properties on organic dyes and the effect of compounding with graphene oxide on the adsorption performance. This paper has obtained the following conclusions:(1) Metal-organic framework material MIL-100 (Fe) and its composite with graphene oxide GO/MIL-100 (Fe) were prepared by hydrothermal method. The prepared MIL-100 (Fe) had a high surface area (1690 m2/g) and porosity (0.996 cm3/g). In GO/MIL-100(Fe), the crystal structure of MIL-100(Fe) was completely preserved. The composite material had a special sandwich structure in which the film-like GO acted as spacers, and the MIL-100 (Fe) crystal as fillers. The thermal stability of composites was improved compared to MIL-100(Fe), while the surface area and porosity decreased.(2) The prepared MIL-100(Fe) showed an excellent adsorption performance for organic dyes methylene blue and methyl orange, and the maximum adsorption capacity was 1018.79 mg/g for methylene blue and 666.67 mg/g for methyl orange, the adsorption capacity was much higher compared to the activated carbon, carbon nanotubes. The adsorption process of MIL-100(Fe) on methylene blue and methyl orange both conformed to the pseudo-second-order kinetic model and the Langmuir model. The adsorption of methylene blue was a spontaneous endothermic process with increased entropy, and the increase in temperature would benefit the adsorption. The adsorption of methyl orange belonged to spontaneous exothermic entropy reduction process, and the adsorption capacity gradually decreased with the temperature was increased.(3) The appropriate amount of graphene oxide composite could effectively improve the adsorption performance of the material on organic dyes. When the content of graphene oxide was 5%, the maximum adsorption capacity of the composite material on methylene blue and methyl orange were respectively increased to 1230.74 mg/g and 1189.06 mg/g, which increased by 21% and 78% compared to MIL-100(Fe). The adsorbent's reuse performance was also improved. As the content of graphene oxide further increased, the adsorption performance of the composite material decreased.(4) The adsorption process of MIL-100(Fe) for heavy metal ions Cr(III) conformed to the pseudo-second-order kinetic model and the Friedrich model. In the competitive adsorption in which Cr(III) co-existed with methylene blue, the adsorption of methylene blue was much stronger than Cr(III), and the adsorbent exhibited a preferential adsorption of methylene blue compared to Cr(III).