溶剂热法合成微纳米配位聚合物MIL-101及超强吸附刚果红的性能研究

Solvent Synthesis of Micro Nano Coordination Polymer MIL-101 and Performance Research of Superior Adsorption of Congo Red

利用溶剂热法通过碱性调节剂(四甲基氢氧化铵)辅助可控合成了纳米配位聚合物MIL-101,利用粉末X射线衍射仪(XRD)、透射电子显微镜(TEM)、傅里叶-红外光谱仪(FT-IR)、热分析仪(TGA)等手段对制备的材料进行形貌和结构表征。由于MIL-101微纳米材料拥有大的BET比表面积,具有大的孔道尺寸,制备的微纳米材料对有机染料刚果红具有超强的吸附性能,其最大吸附容量为1367.1 mg/L,在吸附热力学模型方面,Langmuir热力学模型比Freudlich热力学模型更好地描述吸附热力学模型。

Nano coordination polymer MIL-101 is assisted controllable synthesis by solvothermal method with alkaline modifier(tetramethylammonium hydroxide).The morphology and structure of the materials are characterized by means of powder X-ray diffraction(XRD),transmission electron microscopy(TEM),FT-IR and TGA.Owing to the high surface area and pore volume,the MIL-101 nano structures exhibit excellent adsorption capability for organic dye Congo red.Its maximum adsorption capacity is 1367.1 mg/L,In terms of adsorption thermodynamic model,Langmuir model is better than Freudlich model in describing adsorption thermodynamics.