PDF(Pubmed)
Abstract：
In this work, a series of thermosensitive ionic liquid functionalized polymers, PNx(IL)y, with controllable morphology and particle size were prepared by free radical polymerization. Then, using the polymer PN64(IL)8 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 PN64(IL)8 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.
摘要：
在这项工作中,一系列热敏离子液体功能化聚合物，PNx(IL)y,通过自由基聚合制备了形貌和粒径可控的聚合物。然后，使用具有均匀形态的聚合物PN64（IL）8作为模板剂，采用微波辅助和模板化水热反应法制备了稀土Ce掺杂的ZnO复合光催化材料。用XRD对系列不同Ce掺杂量的光催化材料ZnO-Ce-x进行了表征,SEM,TEM,XPS,和其他方法。结果表明，模板材料PN64（IL）8可以制备出具有均匀花瓣状的ZnO-Ce-2，元素的良好分布，优异的光催化性能。甲基橙(MO)的光催化降解实验表明,当Ce掺杂量只有2光催化材料在水中反应1h,有机染料的降解率可达96.5%。这种光催化剂可用于高浓度MO的降解，以及通过简单的过滤容易回收和有效重复使用。因此,这种光催化剂的结构在制备过程中是可控的，与目前的报道相比，Ce的掺杂量非常低，在污水处理技术领域具有良好的应用前景。
