Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (7): 812-817.DOI: 10.11944/j.issn.1000-0518.2018.07.170295

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Sensitized Luminescence of Terbium(Ⅲ) in BaF2∶Tb3+ Nanoparticles by Salicylate

Suwen LI(),Xuewei ZHANG,Yi JIANG,Jinying YUE,Cong GUAN   

  1. College of Science,Changchun Institute of Technology,Changchun 130012,China
  • Accepted:2017-12-01 Published:2018-07-06 Online:2018-07-06
  • Contact: Suwen LI
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.11304021), the Undergraduate Innovation and Entrepreneurship Training Program of Jilin Province(No.201611437001)

Abstract:

Uniform BaF2∶Tb3+ nanoparticles have been prepared by hydrothermal synthesis, and sodium salicylate(SS) sensitized BaF2∶Tb3+(SS-BaF2∶Tb3+) nanoparticles have been prepared by the ion exchange technique. Their structures, morphologies and photoluminescence properties were studied. A broad excitation band from 200 to 385 nm by monitoring 5D47F5 transition of Tb3+ at 547 nm in SS-BaF2∶Tb3+ nanoparticles was detected. Under excitation of the π-π* electron transition absorption of salicylate, enhanced green emission of Tb3+ ions in SS-BaF2∶Tb3+ nanoparticles was observed due to the energy transfer from SS to Tb3+ ions by “antenna effect”. The photoluminescence lifetimes of Tb3+ ions in SS sensitized nanoparticles were found to be longer than those in un-sensitized nanoparticles.

Key words: sensitization, energy transfer, nanoparticles, photoluminescence properties