Activated carbon (AC), one of the most common adsorbents, and metal-organic framework (MOF), an interesting class of materials, were used for synthesizing AC/MOF composite by the solvothermal method. The strategy designed in this paper is to improve the removal and adsorption performance of AC for dye. MIL-53(Fe) was synthesized on the commercial activated carbon (CAC) to prepare CAC/MIL-53(Fe) composite. Direct Red 23 (DR23) anionic dye was used as a model contaminant. FT-IR, XRD, SEM, and EDX analyses were applied to study the structure and characteristics of CAC/MIL-53(Fe). The parameters (the solution pH, amount of adsorbent dosage, initial dye concentration, and contact time) affecting the dye removal efficiency were investigated. The percentage of dye removal (DR23) under optimal conditions by commercial activated carbon and CAC/MIL-53(Fe) was 50% and 99.9%, respectively. The maximal capacity of adsorption was also raised from 50 to 100mg/g. The adsorption isotherm and kinetics followed the Langmuir and pseudo-second-order models, respectively.

活性炭（AC）是最常见的吸附剂之一，金属有机骨架（MOF）是一类有趣的材料，用于通过溶剂热法合成 AC/MOF 复合材料。本文设计的策略是提高活性炭对染料的去除和吸附性能。在商业活性炭 (CAC) 上合成 MIL-53(Fe) 以制备 CAC/MIL-53(Fe) 复合材料。直接红 23 (DR23) 阴离子染料用作模型污染物。FT-IR、XRD、SEM和EDX分析用于研究CAC/MIL-53(Fe)的结构和特性。研究了影响染料去除效率的参数（溶液 pH 值、吸附剂用量、初始染料浓度和接触时间）。商业活性炭和 CAC/MIL-53(Fe) 在最佳条件下的染料去除率 (DR23) 分别为 50% 和 99.9%。最大吸附量也从50提高到100mg/g。吸附等温线和动力学分别遵循 Langmuir 和准二级模型。