Preparation of Y2O3 ∶ Eu3+ phosphor fine particles using an emulsion liquid membrane system

6 September 2000

journal article
research article
Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry

Vol. 10 (10) , 2306-2310
https://doi.org/10.1039/b002532l

Abstract

Y₂O₃ ∶ Eu³⁺ phosphor particles were obtained by calcination of composite Y–Eu oxalate particles prepared in emulsion liquid membrane (ELM, water-in-oil-in-water (W/O/W) emulsion) systems. In the ELM systems, composite Y–Eu particles could be prepared by transporting either Y³⁺ and Eu³⁺ ions or oxalate ions from the external water phase into the internal water phase, employing proper ELM systems, where bis(1,1,3,3-tetramethylbutyl)phosphinic acid (DTMBPA) or 2-methyl-2-ethylheptanoic acid (VA-10) was used as an extractant (cation carrier), or tri-n-octylamine (TNOA) was used as an anion carrier. These ELM systems were effective for preparing size (submicrometer) and morphology (spherical) controlled composite Y–Eu oxalate particles in the internal water droplets. The Y₂O₃ ∶ Eu³⁺ particles obtained by calcination of the composite oxalate particles showed photoluminescence at 614 nm.

Keywords

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