高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (1): 23.

• 研究论文 • 上一篇    下一篇

特殊形貌GdF3:Eu3+纳米发光材料的制备与性能

李霞,刘桂霞,董相廷,王进贤   

  1. 长春理工大学化学与环境工程学院, 长春 130022
  • 收稿日期:2010-04-29 修回日期:2010-11-09 出版日期:2011-01-10 发布日期:2010-12-11
  • 通讯作者: 刘桂霞 E-mail:liuguixia22@yahoo.com.cn
  • 基金资助:

    国家自然科学基金(批准号: 51072026,   50972020)和吉林省科技发展计划项目(批准号: 20090528)资助.

Preparation and Properties of GdF3∶Eu3+ Luminescent Nanomaterials with Special Morphology

LI Xia, LIU Gui-Xia*, DONG Xiang-Ting, WANG Jin-Xian   

  1. School of Chemistry and Environmental Engineering, Changchun University of Science and Technology,  Changchun 130022, China
  • Received:2010-04-29 Revised:2010-11-09 Online:2011-01-10 Published:2010-12-11
  • Contact: LIU Gui-Xia E-mail:liuguixia22@yahoo.com.cn
  • Supported by:

    ;National Natural Science Foundation-funded projects

摘要: 以PEG-2000、柠檬酸和甘氨酸为表面活性剂,采用水热法制备出扁平纳米棒、纳米花和纳米片状的GdF3:Eu3+发光材料,对其结构和性能进行了表征。XRD结果表明:所得样品均为正交晶系。FESEM照片表明:不同表面活性剂所制备的产物形貌有所不同,并以PEG-2000为表面活性剂研究了不同反应物浓度对产物形貌的影响,对其生长机理进行了探讨。荧光光谱表明:在不同波长激发光的照射下,不同形貌样品的发光强度不同,GdF3:Eu3+纳米晶的最强发射峰均位于591nm处,对应于Eu3+的5D0→7F1的磁偶极跃迁。GdF3:Eu3+的Gd3+-Eu3+之间发生了有效的能量传递过程。

关键词: GdF3:Eu3+, 形貌, 水热法, 纳米发光材料

Abstract: GdF3:Eu3+ luminescent nanomaterials with the morphologies of flat nanorods、nanoflowers and nanoflakes were prepared by PEG-2000, citrate acid and glycine as surfactant via hydrothermal method, the structure and properties were characterized. XRD results showed that the samples are all orthogonal phase GdF3. FESEM images indicated that morphologies varied from the kinds of surfactants. The effect of the reactant concentration on the morphology of the products using PEG-2000 as surfactant was studied, and the growth mechanism was discussed. Photoluminescence spectra showed that the luminescent intensity is different under different excitation wavelength. The effective energy transfer process occurred between Gd3+ and Eu3+ in GdF3:Eu3+. The strongest emission peak of GdF3:Eu3+ nanocrystal is near 591nm, corresponding to 5D0→7F1 magnetic dipole transition of Eu3+. The emission intensities are different from the samples with various morphologies.

Key words: GdF3:Eu3+, morphology, hydrothermal synthesis, luminescent nanomaterials

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