Zhang Yaoyao, Yang Wenjie, Zhu Zhengyuan, Zhang Lin, Peng Wenju
School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China.
School of Materials Science and Engineering, Hubei University, Wuhan 430062, China.
Molecules. 2024 Jul 30;29(15):3589. doi: 10.3390/molecules29153589.
In this work, a series of thermosensitive ionic liquid functionalized polymers, PN(IL), with controllable morphology and particle size were prepared by free radical polymerization. Then, using the polymer PN(IL) with uniform morphology as a templating agent, the ZnO composite photocatalytic materials doped with rare earth metal Ce were prepared in combination with a microwave-assisted and templated hydrothermal reaction method. Series different Ce-doping amount photocatalytic materials ZnO-Ce-x‱ were characterized by XRD, SEM, TEM, XPS, and other methods. The results demonstrated that the templated materials PN(IL) can prepare ZnO-Ce-2‱ with uniform petaloid ambulacra shape, good distribution of elements, and excellent photocatalytic performance. Photocatalytic degradation experiments of methyl orange (MO) showed that when the Ce-doping amount is only 2‱, the degradation rate of organic dyes can reach 96.5% by reacting the photocatalytic materials in water for 1 h. In addition, this kind of photocatalyst can be used for the degradation of high-concentration MO, as well as being easily recovered and effectively reused by simple filtration. Therefore, the structure of this kind of photocatalyst is controllable in the preparation process with an extremely low Ce-doping amount compared with current reports, and it has a good application prospect in the field of wastewater treatment technology.
在本工作中，通过自由基聚合制备了一系列形貌和粒径可控的热敏离子液体功能化聚合物PN(IL)。然后，以形貌均匀的聚合物PN(IL)为模板剂，结合微波辅助模板水热反应法制备了掺杂稀土金属Ce的ZnO复合光催化材料。采用XRD、SEM、TEM、XPS等方法对系列不同Ce掺杂量的光催化材料ZnO-Ce-x‱进行了表征。结果表明，模板材料PN(IL)能够制备出花瓣状 ambulacra 形状均匀、元素分布良好且光催化性能优异的ZnO-Ce-2‱。甲基橙(MO)的光催化降解实验表明，当Ce掺杂量仅为2‱时，光催化材料在水中反应1 h，有机染料的降解率可达96.5%。此外，这种光催化剂可用于高浓度MO的降解，并且通过简单过滤易于回收并有效重复使用。因此，这种光催化剂在制备过程中结构可控，与目前报道相比Ce掺杂量极低，在废水处理技术领域具有良好的应用前景。
