Fabrication of Sr0.5Ba0.5Nb2O 6-precipitated microstructured ceramics for photocatalytic application

Kazuki Yoshida, Hirokazu Masai, Yoshihiro Takahashi, Rie Ihara, Takumi Fujiwara

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We have succeeded in preparing Sr0.5Ba0.5Nb 2O6 (SBN50)-precipitated ceramics by acid etching via a glass-ceramic process using SrO-BaO-Nb2O5-B 2O3-ZnO-SiO2 glasses. Although the mother glass has good resistance to acid etching, the phase separated glass-ceramic obtained by crystallization was easily etched. This phase separation process was favorable for removing the amorphous B2O3ZnO phase and a superfluous crystalline phase. Addition of SiO2, substituted for B2O3, was effective for maintaining the bulk structure of the SBN50-etched ceramic because of its ability to form a strong and chemically stable network. We have found that the SBN50-precipitated ceramic demonstrates photocatalytic activity, which is the first report on the activity of SBN50.

Original languageEnglish
Pages (from-to)731-735
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume119
Issue number1394
DOIs
Publication statusPublished - 2011 Oct

Keywords

  • Chemical etching
  • Crystallized glass
  • Glass
  • Photocatalytic activity

ASJC Scopus subject areas

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

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