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Preparation and Characterization of Rare Earths-Doped YAG Nanofibers by Electrospinning

Author: GaoXuBo
Tutor: DongXiangTing
School: Changchun University of Science and Technology
Course: Inorganic Chemistry
Keywords: Nanofibers Electrospinning PvP Luminescent materials YAG Rare earth ions
CLC: TB383.1
Type: Master's thesis
Year: 2008
Downloads: 121
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Abstract


In recent years, the one-dimensional materials widely used in basic research and technological applications due to its unique physical and chemical properties , and to get people's attention . The nanofibers exhibit some special properties , such as a very large specific surface area and surface flexibility and superior mechanical properties compared with the corresponding material . The electrospinning Preparation one-dimensional material of an effective new method , recently, the technology improved , used to prepare a variety of inorganic nanofibers . Provides a new way for the preparation of the one-dimensional inorganic nanomaterials . Yttrium aluminum garnet (YAG) belongs to Lili strain has an asymmetrical structure . Because of their good optical properties and birefringence efficient , widely used as a matrix material of the light-emitting and laser . By gel -gel process using electrospinning technology , polyvinylpyrrolidone and various metal nitrates as precursors prepared PVP / nitrate composite fibers after high temperature roasting YAG YAG : Eu 3 , YAG: Tb 3 , YAG: Er 3 , ', YAG: Er 3 , Yb 3 < / sup> and YAG : the Nd 3 inorganic nanofibers . Using scanning electron microscopy , transmission electron microscopy , infrared spectroscopy , x -ray diffraction , differential thermal - TG , were characterized by means of fluorescence spectroscopy analysis PvP / nitrate nano- composite fibers and rare earth oxide nano- fibers . The results showed that the YAG, YAG : the of Eu 3 < / sup > YAG : Tb 3 , YAG : Er 3 ' , YAG : Er 3 < , / sup> , the Yb 3 < / SUP > and YAG : the Nd 3 nanofiber as rules of the one-dimensional structure , and K degrees greater than 100μm, uniform diameter distribution , the average diameter of about 50 ~ 100nm. To obtain meaningful results engaged YAG one-dimensional nanomaterials research laid the foundation for progress .

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