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Hydrothermal synthesis of NaY(WO_4)_2:Tb~(3+) powders with assistance of surfactant and luminescence properties

机译:表面活性剂和发光性质的水热合成NaY(WO_4)_2:Tb〜(3+)粉末

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摘要

NaY(WO_4)_2:Tb~(3+) powders with different sizes and morphologies were synthesized by the hydrothermal process. The surfactants and reaction times have obvious effects on sizes and morphologies of samples. When there is the addition of an equimolar combination of oleic acid and oleylamine and the reaction time of 10 h, uniform morphology of octahedron can be formed. As indicated by the FTIR spectra, the enhanced adsorption of oleic acid in the presence of oleylamine leads to the good formation of octahedral NaY(WO_4)_2:Tb~(3+) powders. Surfactants will selectively absorb on the surface of the growing particles via physical and chemical effects, which leads to different growing rates along corresponding directions and induces the formation of octahedral morphology. Under the ultraviolet excitation, NaY(WO_4):Tb~(3+) powders show dominant green emission originating from the ~5D_4 → ~7F_5 transition of Tb~(3+) ions.
机译:通过水热法合成了不同尺寸和形貌的NaY(WO_4)_2:Tb〜(3+)粉末。表面活性剂和反应时间对样品的大小和形态有明显的影响。当添加油酸和油胺的等摩尔组合,并且反应时间为10小时时,可以形成八面体的均匀形态。如FTIR光谱所示,在油胺存在下提高的对油酸的吸附导致八面体NaY(WO_4)_2:Tb〜(3+)粉末的良好形成。表面活性剂将通过物理和化学作用选择性地吸收正在生长的颗粒表面,这导致沿相应方向的不同生长速率并诱导八面体形态的形成。在紫外线激发下,NaY(WO_4):Tb〜(3+)粉末显示出主要的绿色发射,该绿色发射源于Tb〜(3+)离子的〜5D_4→〜7F_5跃迁。

著录项

  • 来源
    《Journal of materials science》 |2015年第9期|6892-6896|共5页
  • 作者

    Da-Xi Sun;

  • 作者单位

    Equipment Engineering Department, Sichuan College of Architectural Technology, Deyang 618000, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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