硅酸盐学报

混合配体Cd-MOF的合成及其光催化降解性能

作者：陈颖1 翟勃银1 梁宇宁1 张宏宇2

单位：(1. 东北石油大学化学化工学院石油与天然气化工省重点实验室黑龙江大庆 163318 2. 大庆石化公司炼油厂黑龙江大庆 163711)

分类号：O643.36

出版年,卷(期):页码：2019,47(4):0-0

DOI：

摘要：

以四水硝酸镉、均苯三甲酸、乳酸和N,N-二甲基甲酰胺为原料，采用溶剂热合成方法，制备得到混合配体Cd-金属有机框架(MOF)材料。利用偏光显微镜、扫描电子显微镜、热重分析仪、Fourier红外光谱、X射线衍射仪、N2吸附–脱附分析、紫外–可见漫反射光谱等手段对其进行表征。以亚甲基蓝(MB)溶液为模拟污染物，室温条件下考察了该材料在紫外光下的光催化活性。研究表明：当混合配体Cd-MOF作为光催化剂时，当其用量为70 mg，MB初始浓度为40 mg/L、pH=8~10时，在2 h内降解率可达80%左右，而且混合配体Cd-MOF经过5次循环试验后仍能保持较稳定的光催化活性。

A mixed ligand Cd-MOF hybrid material was prepared by a solvothermal synthesis method using cadmium tetrahydrate tetrahydrate, trimesic acid, lactic acid and N,N-dime-thylformamide as polarizing materials. The as-obtained samples were characterized by polarizing microscopy, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, N2 absorption-desorption and ultraviolet-visible diffuse reflection spectroscopy. The methylene blue (MB) was used as a model organic pollutant, and the photocatalytic activity of the hybrid material under ultraviolet light at room temperature was examined. The results show that the degradation rate can reach 80% within 2 h when the mixed ligand Cd-MOF is used as a photocatalyst at the amount of 70 mg, the MB initial concentration of 40 mg/L, and the pH values of 8?10. Furthermore, the mixed ligand Cd-MOF can keep its photocatalytic stability after five recycles.

基金项目：

国家自然科学基金项目(51146008)。

作者简介：

参考文献：

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