Preparation and Characterization of YF3:Eu3+ Nanofibers/Polymer Composite Nanofibers

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (2): 225.

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Preparation and Characterization of YF3:Eu3+ Nanofibers/Polymer Composite Nanofibers

HOU Yuan, DONG Xiang-Ting*, WANG Jin-Xian, LIU Gui-Xia, LI Le-Hui

School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China

Received:2010-07-23 Revised:2010-12-13 Online:2010-02-10 Published:2011-02-23
Contact: DONG Xiang-Ting E-mail:dongxiangting888@yahoo.com.cn
Supported by:
国家自然科学基金项目(批准号: 50972020), 吉林省科技发展计划重大项目(批准号: 20070402, 20060504), 教育部科学技术研究重点项目(批准号: 207026), 长春市科技计划项目(批准号: 2007045)和吉林省教育厅“十一五”科学技术研究项目(批准号: 200745, 2005109)资助.

Abstract

Abstract: Y2O3:Eu3+ nanofibers were prepared by electrospinning, and then YF3:Eu3+ nanofibers were obtained by fluorination of the relevant Y2O3:Eu3+ nanofibers followed by deammoniation process via double-crucible method using NH4HF2 as fluorinating agent. YF3:Eu3+ nanofibers/PVP composite nanofibers were fabricated using electrospinning technique again. XRD analysis indicated that orthorhombic YF3:Eu3+ nanofibers with space group Pnma were acquired through fluorination of the cubic Y2O3:Eu3+ nanofibers. YF3:Eu3+ nanofibers/PVP composite nanofibers possess obvious diffraction peaks of YF3:Eu3+. SEM revealed that diameters of YF3:Eu3+ nanofibers and YF3:Eu3+ nanofibers/ PVP composite nanofibers are 91±11 nm and 319±43 nm, respectively, and the surface of these fibers are smooth. The diameters of fibers analyzed by Shapiro-Wilk method are normal distribution. Fluorescence spectra analysis manifested that YF3:Eu3+ nanofibers and YF3:Eu3+ nanofibers/ PVP composite nanofibers emit the strongest emission peaks at 588 nm and 595 nm originating from the transition 5D0→7F1 of Eu3+, which suggests Eu3+ ion in YF3 crystal is at a site of C2 symmetry. PVP has no effects on the wavelength of the emission peaks of YF3:Eu3+, but the luminescent intensity is decreased. Relationship between YF3:Eu3+ contents and luminescence intensity for YF3:Eu3+ nanofibers/PVP composite nanofibers presents linearity.

Key words: Yttrium trifluoride, Electrospinning, Nanofibers, Composite fibers, Phosphors

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HOU Yuan, DONG Xiang-Ting*, WANG Jin-Xian, LIU Gui-Xia, LI Le-Hui. Preparation and Characterization of YF3:Eu3+ Nanofibers/Polymer Composite Nanofibers[J]. Chem. J. Chinese Universities, 2011, 32(2): 225.

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Preparation and Characterization of YF3:Eu3+ Nanofibers/Polymer Composite Nanofibers

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