Hydrothermal synthesis of NaNbO3-morphology change by starting compounds

Nobuhiro Kumada, Qiang Dong, Yoshinori Yonesaki, Takahiro Takei, Nobukazu Kinomura

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Perovskite-type sodium niobate, NaNbO3 was prepared by hydrothermal reaction using an amorphous hydrated niobium oxide (a-Nb 2O5). A single phase of perovskite-type NaNbO3 was obtained under the condition of 160°C and 1.0M NaOH solution, and at higher temperature (≥180°C) cubic shape particles with the size of 510μm were produced. These cubic shape particles had well developed 110 and 001 planes. When other starting compounds, Nb2O5, HNbO3·nH2O and HNb3O8· nH2O were used, well crystallized particles were not obtained. The particles prepared from HNbO3·nH2O and HNb 3O8·nH2O had irregular shape and cubic-like shape with the size of 15 μm. In the case of Nb2O 5 fine particles with the submicron size of ̃0.5μm were obtained.

Original languageEnglish
Pages (from-to)483-485
Number of pages3
JournalJournal of the Ceramic Society of Japan
Volume119
Issue number1390
DOIs
Publication statusPublished - 2011 Jun

Keywords

  • Hydrothermal
  • Morphology
  • Perovskite-type
  • Sodium niobate

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Hydrothermal synthesis of NaNbO<sub>3</sub>-morphology change by starting compounds'. Together they form a unique fingerprint.

Cite this