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采用静电纺丝技术与溶剂热法相结合,制备了异质结型Er2O3/TiO2复合纳米纤维光催化材料。利用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、高分辨透射电镜(HRTEM)和紫外-可见吸收光谱(UV-Vis)等分析测试手段对材料进行表征,并以罗丹明B(RB)的脱色降解为模式反应,考察了材料的光催化性能。实验结果表明:Er2O3纳米粒子均匀地负载在TiO2纤维上,形成了异质型Er2O3/TiO2复合纳米纤维光催化材料,拓宽了光谱响应范围,有利于TiO2光生电子和空穴的分离,增强了体系的量子效率。与纯TiO2纳米纤维相比光催化活性明显提高,对RB的紫外光降解率达93.93%。
The heterojunction Er 2 O 3 / TiO 2 composite nanofiber photocatalytic materials were prepared by electrospinning combined with solvothermal method. The materials were characterized by XRD, SEM, TEM, HRTEM and UV-Vis. Decolorization of Ming B (RB) degrades into a mode reaction, and the photocatalytic properties of the material are investigated. The experimental results show that the Er2O3 nanoparticles are uniformly loaded on the TiO2 fibers, and the heterogeneous Er2O3 / TiO2 composite nanofiber photocatalytic materials are formed, which broadens the spectral response range, facilitates the separation of TiO2 photogenerated electrons and holes, and enhances the system Quantum efficiency. Compared with the pure TiO2 nanofibers, the photocatalytic activity was significantly improved, and the UV degradation rate of RB was 93.93%.