Hydrothermal synthesis of monodispersed CePO4:Tb3+ porous microspheres and their redox-responsive luminescence

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2 Citations (Scopus)

Abstract

Monodispersed CePO4:Tb3+ microspheres, which were formed by aggregation of primary nanoparticles, were synthesized by a hydrothermal reaction method assisted with ethylenediaminetetraacetic acid. The microspheres were found to have a hierarchically porous structure as well as a high specific surface area according to structural and chemical analyses. The microspheres exhibited green photoluminescence (PL) due to 4f–4f electronic transitions of Tb3+ ions doped in the CePO4 crystal upon irradiation with ultraviolet light. The microspheres were then treated with an oxidant (potassium permanganate) and a reductant (l(+)-ascorbic acid) in aqueous solutions at room temperature to examine their effect on the PL property. The PL intensity of the microspheres was once decreased by the oxidation and then increased by the reduction. Such the change in the PL intensity was also shown to be quantitative against the concentration of the oxidant and the reductant. Thus the monodispersed CePO4:Tb3+ porous microspheres were demonstrated to be a facile luminescence-sensing material.

Original languageEnglish
Article number807
JournalSN Applied Sciences
Volume1
Issue number8
DOIs
Publication statusPublished - 2019 Aug

Keywords

  • Aggregate
  • Luminescence
  • Particle
  • Phosphor
  • Redox reaction
  • Sensing

ASJC Scopus subject areas

  • Engineering(all)
  • Environmental Science(all)
  • Materials Science(all)
  • Physics and Astronomy(all)
  • Chemical Engineering(all)
  • Earth and Planetary Sciences(all)

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