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采用水热法合成了金属-有机骨架Al-MIL-53-COOH,并探讨了反应时间、原料浓度等合成条件对金属-有机骨架晶体的影响。扫描电子显微镜表明随反应时间增加,金属-有机骨架颗粒增大。X射线粉末衍射分析表明随反应物浓度降低,生成的金属-有机骨架由原始的闭孔相转变为开孔相。以Al-MIL-53-COOH为载体,AgNO3为反应液,通过离子交换法,制备了载银金属-有机骨架抗菌剂,并对其抗菌性能进行了测定。结果表明:合成金属-有机骨架的条件对交换性能影响较大,反应6h时的产物可得到最高载银量为6.38%(质量分数)的载银金属-有机骨架材料。抗菌实验表明不同载银量的金属-有机骨架材料对5类菌均具有良好的抗菌活性。
The metal-organic framework Al-MIL-53-COOH was synthesized by hydrothermal method. The effects of synthesis conditions such as reaction time and concentration of raw materials on the metal-organic framework were discussed. Scanning electron microscopy showed that as the reaction time increased, the metal-organic framework particles increased. X-ray powder diffraction analysis showed that as the concentration of the reactants decreased, the resulting metal-organic framework transitioned from the original closed-cell phase to the open-cell phase. Al-MIL-53-COOH as carrier and AgNO3 as reaction solution, silver-supported metal-organic framework antibacterial agent was prepared by ion exchange method, and its antibacterial property was tested. The results show that the conditions for the synthesis of metal-organic framework greatly affect the exchangeability, and the silver-metal-organic framework with the highest silver loading of 6.38% (mass fraction) can be obtained at 6h. Antibacterial experiments showed that different metal loading of metal - organic scaffold materials have good antibacterial activity of five kinds of bacteria.