金属有机骨架材料MOF-235的合成及其对甲基橙吸附性能的研究

对金属有机骨架材料MOF-235的合成、表征及其对甲基橙染料的吸附性能进行研究.采用水热法合成MOF-235材料,通过X-射线衍射、IR、SEM验证并表征其结构特点.运用动力学模型和热力学模型,研究MOF-235对甲基橙溶液的吸附性能.结果显示,该材料对甲基橙的吸附可在极短的时间内达到平衡,温度对吸附效果的影响不大.对实验结果进行吸附等温线和动力学方程拟合,结果表明,MOF-235材料吸附甲基橙的Langmuir等温方程拟合效果更好,吸附过程更符合二级动力学模型.

Study on synthesis and adsorption properties of methyl orange metal organic material MOF-235

In this paper, MOF-235 synthesis characterization was studied and Adsorption properties of methyl orange dye was investigated. First of all, synthetic MOF-235 materials, using X-ray diffraction characterization and prove that the reported in the material and the literature comments. The material was characterized by IR, SEM. The adsorption capacities of MOFs-235 to methyl orange solution was studied in the use of kinetics model and thermodynamic model. Experimental results show that the adsorption capacities of MOFs-235 in a very short period of time can reach equilibrium; and the influence of temperature on the adsorption effect can be ignored. The adsorption isotherms and kinetic model were fitted to the experimental results. MOF-235 adsorption isotherms are fitted by the results are more in accord with the Langmuir model. And the fitting of the kinetic result shows that second order kinetic model than the first-order kinetic model more in line with the MOF-235 material of methyl orange adsorption process.