The significance of phosphate source in the preparation of functional luminescent phosphate materials

Minsung Kim, Makoto Kobayashi, Hideki Kato, Masato Kakihana

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    The stability and reactivity of phosphate raw materials, including two water-soluble phosphates, ethylene glycol-conjugated phosphate (EG-P), and polyethylene glycol-conjugated phosphate (PEG-P) developed by our group, were examined with the aim of synthesizing phosphates with high functionalities. EG-P was found to gradually hydrolyze in an aqueous solution, resulting in the formation of H3PO4, while PEG-P was stable for more than two months. EG-P and PEG-P did not form insoluble materials in aqueous solution in the presence of many other cations, while precipitates were often observed using conventional phosphate raw materials. In particular, there were no precipitates in an aqueous solution of PEG-P in the presence of Ca2+and Li+ions, which easily formed insoluble phosphates in a given aqueous condition. Consequently, single-phase LiCaPO4with high luminescence properties could be obtained by a polymerizable complex method employing PEG-P, while impurity phases were formed using other P sources, and KSrPO4was formed as a single phase using EG-P and PEG-P.

    Original languageEnglish
    Pages (from-to)626-629
    Number of pages4
    JournalJournal of the Ceramic Society of Japan
    Volume122
    Issue number1428
    DOIs
    Publication statusPublished - 2014 Aug 1

    Keywords

    • Homogeneity
    • Phosphate
    • Phosphor
    • Raw material
    • Solution-based method

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Chemistry(all)
    • Condensed Matter Physics
    • Materials Chemistry

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