静电纺丝法制备Eu^(3+)掺杂的氧化钆纳米纤维

Fabrication of Gd_2O_3:Eu^(3+) nanofibers by electrospinning technique

以聚乙烯吡咯烷酮(PVP)为络合剂与Gd(NO3)3.6H2O和Eu(NO3)3.6H2O反应制得前驱体溶液,采用静电纺丝技术制备了PVP/Gd(NO3)3.Eu(NO3)3复合纳米纤维,经焙烧得到分布均匀、具有较大比表面积的Gd2O3:Eu3+纳米纤维。采用扫描电镜(SEM)、红外光谱(FT-IR)、X-射线衍射(XRD)及差热-热重分析(TG-DTA)等现代分析手段对纤维的表面形貌、纯度和结晶度进行了表征。荧光光谱分析表明:随着烧结温度的升高,Gd2O3:Eu3+纳米纤维的结晶度就越高,其荧光性能也越来越强。

PVP/Gd（ NO3 ）3 ·Eu（ NO3 ）3 composite fibers were prepared by electro-spinning technique with C,d（ NO3 ）3·6H2O, Eu （NO3）3·6H2O and PVP as starting materials. After calcining the above precursor fibers, Gd2O3 ：Eu^3＋ fibers were successfully obtained. The Gd2O3 ：Eu^3＋ micro/nano fibers were characterized by SEM, FTIR, XRD, TG-DTA and luminescence spectra, respectively. Results show that the crystalline phase and morphology of Gd2O3 ： Eu^3＋ fibres are greatly changed by the calcination temperature.