以水合硝酸铟、N，N-二甲基甲酰胺、对苯二甲酸及衍生物为原料，柠檬酸钠溶液为调节剂，采用溶剂热法合成MIL-68（In）、NH₂-MIL-68（In）和MIL-68（In）-SC 3种金属-有机骨架材料，通过XRD、BET、SEM、TEM、FI-IR等测试技术对其进行表征；研究了3种材料对染料废水中亚甲基蓝（MB）的吸附性能，考察了吸附时间和溶液pH对吸附过程的影响。结果表明，柠檬酸钠可提高合成材料的比表面积和孔容；加柠檬酸钠调节的MIL-68（In）-SC对MB的吸附性能高于MIL-68（In）、NH₂-MIL-68（In）；合成材料对MB的吸附动力学符合准二级动力学方程；吸附过程符合Langmuir的单分子层吸附；经无水乙醇解析，合成材料重复利用再生性能良好，对染料废水中MB的脱除具有良好的应用前景。

Three kinds of metal-organic frameworks (MOFs) materials,including MIL-68(In),NH₂-MIL-68(In) and MIL-68(In)-SC,are prepared through solvothermal method with Indium nitrate hydrate,N,N-dimethylformamide,terephthalic acid and its derivatives as raw materials,and sodium citrate solution as a regulator.The samples are characterized by XRD,BET,SEM,TEM,FI-IR and other testing technologies.Their adsorption performance to methylene blue (MB) in dye wastewater are tested,and the effects of adsorption time and solution pH on the adsorption process are investigated.Results show that sodium citrate can increase specific surface area and pore volume of synthesized MOFs.Adsorption performance of MIL-68(In)-SC to MB that is adjusted by sodium citrate is higher than that of MIL-68(In) and NH₂-MIL-68(In).Adsorption kinetics of MOFs to MB conforms to quasi-second-order kinetic equations and the adsorption process conforms to Langmuir's monolayer adsorption.After treated by absolute ethanol,the synthesized MOFs have good recycling performance,showing a good application prospects for the removal of MB from dye wastewater.

张帆(1994-),女,硕士研究生,研究方向为废水、废气处理,153884669@qqcom