Abstract ZIF-8@TiO2 micron composite, one kind of new high-efficiency photocatalyst was prepared by hydrothermal method in this work. We compared the ability of ZIF-8, TiO2 nanospheres and ZIF-8@TiO2 to catalytically degrade tetracycline. The results of the characterization show that the TiO2 nanospheres grow uniformly on the surface of ZIF-8, and ZIF-8 and TiO2 are linked together by chemical bonds. The synergistic effect of ZIF-8 and TiO2 greatly enhances the catalytic ability of the composite photocatalyst. In ZIF-8@TiO2 micron composite, ZIF-8 provides a new way for photogenerated electron transfer as a charge separator, to reduce the charge recombination rate. Since the hybrid combines the advantages of ZIF-8 and TiO2, ZIF-8@TiO2 exhibits excellent ability to catalytically degrade tetracycline. The possible photocatalytic mechanism of the hybrid photocatalyst was also discussed.

中文翻译：

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水热法制备ZIF-8@TiO2微米复合材料具有增强的四环素降解吸收和光催化活性

摘要 本工作采用水热法制备了一种新型高效光催化剂ZIF-8@TiO2微米复合材料。我们比较了 ZIF-8、TiO2 纳米球和 ZIF-8@TiO2 催化降解四环素的能力。表征结果表明，TiO2纳米球在ZIF-8表面均匀生长，ZIF-8与TiO2通过化学键连接在一起。ZIF-8和TiO2的协同作用大大增强了复合光催化剂的催化能力。在 ZIF-8@TiO2 微米复合材料中，ZIF-8 作为电荷分离器为光生电子转移提供了一种新途径，以降低电荷复合率。由于混合体结合了 ZIF-8 和 TiO2 的优点，ZIF-8@TiO2 具有出色的催化降解四环素的能力。