论文部分内容阅读
采用高压静电纺丝技术,经高温焙烧制得掺杂Eu3+的一维六方晶相La2O3纳米纤维。采用扫描电镜(SEM)、X-射线衍射(XRD)、差热-热重分析(TG-DTA)及荧光光谱(PL)等测试手段对纤维的表面形貌、纯度、晶型及荧光性质进行了表征。由扫描电镜照片可以看出所制得的纤维较为均匀,纤维直径分布在370～430nm之间,经过1100℃焙烧后直径减小至245nm左右。荧光光谱测试显示出样品具有较好的荧光性质,尤其是Eu3+的f-f跃迁激发及电荷转移跃迁引起较强发光。
Using high-voltage electrostatic spinning technology, high-temperature roasting obtained Eu3 + doped one-dimensional hexagonal La2O3 nanofibers. The surface morphology, purity, crystal form and fluorescence properties of the fibers were investigated by SEM, XRD, TG-DTA and PL. Characterization. It can be seen from the scanning electron micrograph that the obtained fibers are more uniform, the fiber diameter is distributed between 370 and 430 nm, and the diameter after calcination at 1100 ° C is reduced to about 245 nm. Fluorescence spectroscopy shows that the sample has good fluorescence properties, especially the f-f transition and charge-transfer transitions of Eu3 + cause stronger luminescence.