欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用静电纺丝技术制备了聚乙烯吡咯烷酮PVP/[Y（NO3）3＋Al（NO3）3＋Eu（NO3）3]复合纤维,将其进行热处理,得到了YAlO3：Eu3＋发光纳米纤维。采用X射线衍射（XRD）、扫描电镜（SEM）、荧光光谱等技术对样品进行了表征。PVP/[Y（NO3）3＋Al（NO3）3＋Eu（NO3）3]复合纤维经1200℃焙烧2h后,获得了YAlO3：Eu3＋纳米纤维,属于正交晶系,空间群为Pnma。用Shapiro-Wilk方法检验了纤维直径分布情况,在95%的置信度下,纤维直径属于正态分布。PVP/[Y（NO3）3＋Al（NO3）3＋Eu（NO3）3]复合纤维表面光滑,纤维分散性较好,有很好的长径比,尺寸均一,平均直径为（152.9±26.0）nm;YAlO3：Eu3＋纳米纤维的平均直径为（106.7±20.2）nm。在234nm的紫外光激发下,YAlO3：Eu3＋纳米纤维的主要发射峰位于590nm和609nm处,分别属于Eu3＋的5 D0→7F1跃迁和5 D0→7F2跃迁,Eu3＋掺杂离子浓度对YAlO3：Eu3＋发射峰的峰型与位置均没有影响,当Eu3＋掺杂离子浓度为5%时,YAlO3：Eu3＋纳米纤维发光最强。
英文摘要：
PVP/[Y（NO3）3＋Al（NO3）3＋Eu（NO3）3] composite nanofibers are prepared via electrospinning,and YAlO3：Eu3＋ nanofibers are fabricated by calcination of the prepared composite fibers.The samples are characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM） and fluorescence spectroscopy.Pure phase YAlO3：Eu3＋ nanofibers are obtained by calcination of the relevant composite fibers at 1200 ℃ for 2 h and YAlO3：Eu3＋ nanofibers belong to orthorhombic system with space group Pnma.The diameters of fibers analyzed by Shapiro-Wilk method obey normal distribution under the confidence of level 95%.The surfaces of as-prepared composite fibers are smooth with a good aspect ratio,dispersion and uniform size.The diameters of PVP/[Y（NO3）3＋Al（NO3）3＋Eu（NO3）3] fibers and YAlO3：Eu3＋ nanofibers are（152.9±26.0）nm and（106.7±20.2）nm,respectively.Fluorescence spectra analysis manifests that YAlO3：Eu3＋ nanofibers emit the predominant emission peaks at 590 nm and 609 nm under the excitation of 234 nm ultraviolet ray,attributed to the transitions of 5D0→7F1 and 5D0→7F2 energy levels of Eu3＋,respectively.The doping concentrations of Eu3＋ have no effect on the shape and wavelength of the emission spectra of YAlO3：Eu3＋,and the luminescent intensity reaches a maximum at about 5% of Eu3＋.
同期刊论文项目
同项目期刊论文
Synthesis and Formation Mechanism of NiO@Al2O3@TiO2 Coaxial Trilayered Submicrocables by Electrospin
Preparation and Characterization of Polycrystalline La(2)Zr(2)O(7) Ultrafine Fibres via Electrospinn
Hydrothermal Synthesis and Property Comparation of YF3:Eu3+ Luminescent Nanomaterials with Various M
Synthesis and Luminescence Properties of YF3:Eu3+ Hollow Nanofibers via the Combination of Electrosp
Electrospinning fabrication of high-performance magnetic@photoluminescent bifunctional coaxial nanoc
Synthesis of Y2O2S:Eu3+ luminescent nanobelts via electrospinning combined with sulfurization techni
Electrospinning Fabrication and Properties of Fe3O4/Eu(BA)3phen/PMMA Magnetic-photoluminescent Bifun
Electrospinning Preparation and Properties of Fe3O4/Eu(BA)3phen/PVP Magnetic-photoluminescent Bifunc
Preparation and characterization of tricomponent SiO2/SnO2/TiO2 composite nanofibers by electrospinn
Architectures of YF3:Eu3+ solid and hollow sub-microspheres: a facile arginine-assisted hydrothermal
Hydrothermal Synthesis and Properties of YVO4:Eu3+ Ordered Nanospheres and Coating GdVO4 on Their Su
Hydrothermal Preparation and Luminescence Properties of NaGd (MoO4)(2) : Dy3+, Eu3+ White-light Phos
Preparation and Characterization of Fe3O4@Gd2O3:Eu3+ Bi-functional Magnetic and Luminescent Composit
期刊信息
位置：