Fe基MOF的制备与可见光催化降解四环素的研究

Preparation of Fe-based MOF and Study on Degradation of Tetracycline by Visible Light

四环素为代表的抗生素污染已成为当前环境领域研究的热点问题之一。本文采用不同合成方法制备了MIL-100(Fe)和MIL-101(Fe)金属有机框架材料。通过FTIR、XRD、SEM和粒径测试验证其结构特点,利用紫外可见漫反射证明了所制备材料具有可见光响应性。将四环素作为水体污染模型,研究了可见光照射下的降解效率。结果表明,MIL-100(Fe)和MIL-100(Fe)对四环素的光催化降解率分别为57.8%和95.3%,对比发现,MIL-101(Fe)具有更好的可见光催化降解性能。

Antibiotic pollution represented by tetracycline has become one of the hot issues of current research in the environmental field.The metal-organic frameworks materials(MOFs),MIL-100(Fe) and MIL-101(Fe) was successfully prepared.The results of FTIR、XRD、SEM、Particle size analysis were used to characterize the structure of MIL-100(Fe) and MIL-101(Fe).The ultraviolet-visible diffuse reflection proves that the prepared material has visible light responsiveness.The degradation efficiency of tetracycline,a model substance of pollution on water,was studied with irradiation by sunlight.The results show that the photocatalytic degradation rates of MIL-100(Fe) and MIL-101(Fe) to tetracycline were 57.8% and 95.3%,respectively.MIL-101(Fe) has better visible light catalytic degradation.performance.