一维La_2O_3:Eu纳米纤维的制备及荧光性质  

Preparation and luminescence properties of one-dimensional La_2O_3:Eu nanofibers

作　　者：张晓燕[1] 柳巍[1] 

机构地区：[1]山东理工大学材料科学与工程学院,山东淄博250049

出　　处：《山东大学学报（理学版）》2009年第3期32-34,44,共4页Journal of Shandong University(Natural Science)

基　　金：国家自然科学基金资助项目(59783001);山东省自然科学基金资助项目(Y2006B41);山东省教育厅资助项目(J6A53)

摘　　要：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。One-dimensional nanofibers with Eu^3＋ doped La2O3 were prepared by the electrospinning method followed by high- temperature calcinations. Their structures and optical properties were characterized by SEM, X-ray diffraction （XRD）, thermogravimetry-differential thermal analysis （TG-DTA）, and photoluminescence spectra（PL）. SEM images of fibers showed that the grain size is about 370 - 430 nm, and the diameter diminishes, with an average grain size of about 245 nm when calcined at 1 100 ℃. The PL spectra show considerable enhancement of photoluminescence, especially the Eu^3 ＋ the charge transfer band.

关 键 词：静电纺丝 La2O3:Eu^3+纳米纤维 荧光光谱 

分 类 号：O61[理学—无机化学]