Hydrothermal synthesis of NaNbO3-morphology change by starting compounds

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

doi:10.2109/jcersj2.119.483

Hydrothermal synthesis of NaNbO₃-morphology change by starting compounds

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

Institute of Multidisciplinary Research for Advanced Materials (IMRAM)

Research output: Contribution to journal › Article › peer-review

11 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 language	English
Pages (from-to)	483-485
Number of pages	3
Journal	Journal of the Ceramic Society of Japan
Volume	119
Issue number	1390
DOIs	https://doi.org/10.2109/jcersj2.119.483
Publication status	Published - 2011 Jun

Keywords

Hydrothermal
Morphology
Perovskite-type
Sodium niobate

ASJC Scopus subject areas

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

Access to Document

10.2109/jcersj2.119.483

Cite this

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title = "Hydrothermal synthesis of NaNbO3-morphology change by starting compounds",

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.",

keywords = "Hydrothermal, Morphology, Perovskite-type, Sodium niobate",

author = "Nobuhiro Kumada and Qiang Dong and Yoshinori Yonesaki and Takahiro Takei and Nobukazu Kinomura",

year = "2011",

month = jun,

doi = "10.2109/jcersj2.119.483",

language = "English",

volume = "119",

pages = "483--485",

journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",

issn = "1882-0743",

publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

number = "1390",

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T1 - Hydrothermal synthesis of NaNbO3-morphology change by starting compounds

AU - Kumada, Nobuhiro

AU - Dong, Qiang

AU - Yonesaki, Yoshinori

AU - Takei, Takahiro

AU - Kinomura, Nobukazu

PY - 2011/6

Y1 - 2011/6

N2 - 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.

AB - 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.

KW - Hydrothermal

KW - Morphology

KW - Perovskite-type

KW - Sodium niobate

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