无机材料学报 ›› 2015, Vol. 30 ›› Issue (7): 719-724.DOI: 10.15541/jim20140659

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柔性Eu3+掺杂SiO2纳米纤维薄膜的制备及其发光性能

张书娴, 崔 博, 王宏志, 李耀刚, 张青红   

  1. (东华大学 材料科学与工程学院, 纤维材料改性国家重点实验室, 上海201620)
  • 收稿日期:2014-12-18 修回日期:2015-02-05 出版日期:2015-07-20 网络出版日期:2015-06-25
  • 作者简介:张书娴(1990–), 女, 硕士研究生. E-mail: susansmile@yeah.net
  • 基金资助:
    高等学校学科创新引智计划(111-2-04);高等学校博士学科点专项科研基金(20110075130001);教育部创新团队发展计划(IRT1221);上海市科委项目(12nm0503900, 13JC1400200)

Preparation and Luminescence Properties of Flexible Eu3+ Doped SiO2 Fibrous Membranes

ZHANG SHU-XIAN, CUI BO, WANG HONG-ZHI, LI YAO-GANG, ZHANG QING-HONG   

  1. (State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China)
  • Received:2014-12-18 Revised:2015-02-05 Published:2015-07-20 Online:2015-06-25
  • About author:ZHANG SHU-XIAN. E-mail: susansmile@yeah.net
  • Supported by:
    The Program of Introducing Talents of Discipline to Universities (111-2-04);Specialized Research Fund for the Doctoral Program of Higher Education (20110075130001);Innovative Research Team in University (IRT1221);Science and Technology Commission of Shanghai Municipality (12nm0503900, 13JC1400200)

摘要:

采用溶胶-凝胶法结合静电纺丝技术制备了柔性Eu3+掺杂SiO2纤维薄膜, 采用SEM、XRD、FT-IR、TG和PL等测试方法对材料进行表征。Eu3+掺杂SiO2纤维薄膜在热处理后纤维直径变小, 纤维表面平滑无粘连。通过控制升温速度, 纤维薄膜经热处理后仍具有较高的力学强度, 750℃热处理后其拉伸强度可达4.31 MPa, 经过多次弯曲仍能保持原样。在392.6 nm光源激发下, Eu3+掺杂SiO2纤维薄膜在570~670 nm附近呈现出来自于5D07FJ的发射峰。当Eu3+掺杂浓度为8mol%时, 经过750℃热处理后Eu3+掺杂SiO2纤维薄膜的发光强度达到最大值。

关键词: 静电纺丝, 柔性, SiO2纤维薄膜, 发光性能

Abstract:

Eu3+ doped SiO2 fibrous membranes were prepared by Sol-Gel and electrospinning methods. The obtained samples were chacterized by SEM, XRD, FT-IR, TG, PL, etc. By heat-treatment, the organic components were removed slowly and the diameters of the Eu3+ doped SiO2 fibers decreased. SEM images exhibit that the surface of the fibers retains smooth and uniform after heat-treatment. By controlling the heating rate, the Eu3+ doped SiO2 fibrous membranes present relatively high tensile strength at about 4.31 MPa after heat-treatment at 750℃. The samples exhibit no cracks after bending and recovering process. By excited by 392.6 nm light, the emission peaks between 570-670 nm are observed, which attributes to the 5D07FJ transition. The strongest emission peak situates at 616 nm results from Eu3+ 5D07F2 transition. The optimal heat-treatment temperature is 750℃. PL spectra also show that the luminescence intensity attains the highest value at the concentration of 8mol% Eu3+ doped.

Key words: electrospinning, flexible, SiO2 fibrous membranes, luminescence properties

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