金属有机框架吸附材料的制备及表征

Preparation and Characterization of Metal Organic Framework Adsorption Materials

采用溶剂热合成方法,分别制备出Cu的对苯二甲酸骨架材料Cu(BDC)和Zn的沸石咪唑酯骨架材料(ZIF-8),对产物进行了高温煅烧处理,采用SEM和XRD对煅烧前后所得样品进行表征。结果表明Cu(BDC)和ZIF-8样品在煅烧后,样品均由不规则多边形块状颗粒转变为表面粗糙的类球形颗粒。可见煅烧可以使产物表面变粗糙,增大比表面积,有望在高效吸附剂领域得到广泛应用。

In this paper,the solvothermal synthesis method was used to prepare Cu(BDC)terephthalic acid framework materials and Zn zeolite imidazole ester framework materials(ZIF-8)respectively,and the products were calcined at high temperature.The samples obtained before and after calcination were characterized by using SEM and XRD.The results showed that the morphology of samples changed from irregular polygonal block particles to rough surface-like spherical particles after the calcination of Cu(BDC)and ZIF-8 samples.It can be seen that calcination can roughen the surface of the product and increase the specific surface area,which is expected to be widely used in the field of high-efficiency adsorbents.