TiO2 has been known as an excellent semiconductor photocatalyst for wastewater treatment purposes. But, its visible light efficiency is low and cannot be easily recovered from the reaction mixture. In order to overcome these major disadvantages, a novel hollow magnetically recoverable ZnO-TiO2/CoFe2O4 photocatalyst is synthesized by the sol–gel and layer self-assembly methods. The synthesized photocatalyst was characterized by means of X-ray diffractometer (XRD), Transmission electron microscopy (TEM), Vibrating sample magnetometer (VSM), Fluorescence spectrometer (FL), and UV-Vis/DRS techniques. Complete degradation of rhodamine B is attained in the presence of ZnO-TiO2/CoFe2O4 photocatalyst under the irradiation of ultraviolet and sunlight within 90[Formula: see text]min. The photocatalyst can be repeatedly reused for five times without significantly diminishing of its photocatalytic performance.

中文翻译：

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ZnO-TiO2/CoFe2O4中空光催化剂的合成与表征：磁回收和高效光催化性能

二氧化钛2已被称为用于废水处理目的的优秀半导体光催化剂。但是，它的可见光效率很低，并且不容易从反应混合物中回收。为了克服这些主要缺点，一种新型中空磁可回收 ZnO-TiO2/钴铁2○4光催化剂通过溶胶-凝胶和层自组装法合成。采用X射线衍射仪(XRD)、透射电子显微镜(TEM)、振动样品磁强计(VSM)、荧光光谱仪(FL)和UV-Vis/DRS技术对合成的光催化剂进行表征。在 ZnO-TiO 存在下实现罗丹明 B 的完全降解2/钴铁2○4光触媒在紫外线和太阳光照射下90[公式：见正文]min内。该光催化剂可以重复使用五次而不会显着降低其光催化性能。