Luminescent sintered silica glass prepared by adsorbing Pr ions into mesoporous SiO2-PVA nanocomposite

Hiroshi Ikeda, Takahiro Murata, Shigeru Fujino

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    A monolithic silica glass doped with Pr3+ was prepared by immersing a mesoporous SiO2-polyvinly alcohol (PVA) nanocomposite in a Pr nitrate solution and then sintering it at 1100°C in air. The sintered glass exhibited pink emission when excited by ultraviolet irradiation. The photoluminescence intensity of the glass depended on the total concentration of Pr ions, which was adjusted by changing the concentration of the Pr nitrate solution and the immersion time. The glass with the highest photoluminescence intensity was prepared by using a 1- or 10-mM Pr solution at an immersion time of 60 min. To reveal how the immersion conditions affected the photoluminescence intensity, we analyzed and discussed the adsorption kinetics of the Pr ions onto the surface of the mesoporous nanocomposite. At immersion times below 60 min, the Pr ions diffused into pores of the nanocomposite without aggregating. To prepare Pr3+-doped silica glass with high photoluminescence, both the concentration of the Pr solution and the immersion time must be controlled.

    Original languageEnglish
    Pages (from-to)2541-2547
    Number of pages7
    JournalJournal of Composite Materials
    Volume50
    Issue number18
    DOIs
    Publication statusPublished - Aug 1 2016

      Fingerprint

    All Science Journal Classification (ASJC) codes

    • Ceramics and Composites
    • Mechanics of Materials
    • Mechanical Engineering
    • Materials Chemistry

    Cite this