Solvothermal synthesis of raspberry-like YVO4:Eu nanoparticles in methanol-water system

Sulawan Kaowphong, Kouichi Nakashima, Valery Petrykin, Somchai Thongtem, Masato Kakihana

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    YVO4:Eu nanoparticles with controllable size were successfully fabricated by the original solvothermal method at 300°C for 3 hours employing methanol-water solution. The effect of the solution pH on size and morphology of the YVO4:Eu particles was examined. SEM micrographs have revealed that the powders are composed of raspberry-like particles with a diameter of 250-450 nm that are comprised by the primary spherical particles in the range of 14-20 nm. The sizes of the primary particles decrease with the increase of pH. Post-annealing at 1000°C improved the luminescence intensity of the YVO4:Eu red phosphor, whereas the raspberry-like shapes of the powders prepared in acidic solutions have retained. The powders prepared under basic conditions experienced considerable sintering.

    Original languageEnglish
    Title of host publicationThe Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III
    Pages910-915
    Number of pages6
    Publication statusPublished - 2009 Dec 1
    Event3rd International Conference on Processing Materials for Properties 2008, PMP III - Bangkok, Thailand
    Duration: 2008 Dec 72008 Dec 10

    Publication series

    NameThe Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III
    Volume2

    Other

    Other3rd International Conference on Processing Materials for Properties 2008, PMP III
    Country/TerritoryThailand
    CityBangkok
    Period08/12/708/12/10

    Keywords

    • Eu-doped YVO
    • Raspberry-like nanoparticles
    • Solvothermal method

    ASJC Scopus subject areas

    • Materials Science(all)

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