Synthesis of photofunctional ceramics by various solution processes

• TOMITA Koji

  School of Science, Tokai University

Abstract

In this study, photofunctional ceramics such as phosphors and photocatalysts were synthesized by various solution methods. Titanium oxide (TiO₂) photocatalysts were synthesized via hydrothermal reactions of water-soluble titanium complexes. Single-phase anatase, rutile, brookite, and bronze were prepared using different pH levels and ligands. Thin films fabricated from bronze-phase TiO₂ showed photoinduced hydrophilicity, and the hydrophilic state was maintained for 5 days in darkness. Y₂O₃:Eu and YBO₃:Tb phosphors with spherical, hexagonal-plate, and cubical shapes were prepared by precipitation from homogeneous solutions; nanoparticles of these oxides were also prepared. The morphology of the prepared Ag₃PO₄ photocatalyst particles was controlled to be rhombic dodecahedral, dodecapodal, or tetrapodal by precipitation from homogeneous solutions. Oxide up-conversion phosphors were investigated, and CeO₂ doped with Yb, Er, Ho, or Tm by parallel synthesis using the polymerizable complex method was found to be a superior polychromatic up-conversion phosphor.

Journal

• Journal of the Ceramic Society of Japan

  Journal of the Ceramic Society of Japan 121 (1417), 841-846, 2013

  The Ceramic Society of Japan

Keywords

• Phosphor
• Photocatalyst
• TiO₂
• CeO₂
• Solution process
• Morphology control
• Parallel synthesis

Details

• CRID: 1390282680264577280
• NII Article ID: 130004480205
• DOI: 10.2109/jcersj2.121.841
• ISSN: 13486535
• ISSN: 18820743
• Web Site: https://www.jstage.jst.go.jp/article/jcersj2/121/1417/121_JCSJ-GR13114/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed