Hydrothermal Synthesis of Nanosize Oxide Particles

Yuko Sawaki; Kazutaka Matsuo; Mikio Kishimoto

doi:10.14852/jcersjsuppl.112.0.S17.0

Journal of the Ceramic Society of Japan, Supplement 112-1, PacRim5 Special Issue

Session ID : 1

DOI https://doi.org/10.14852/jcersjsuppl.112.0.S17.0

Conference information

Host: The Ceramic Society of Japan

Co-host: Iketani Science and Technology Foundation, International Ceramic Federation, Commemorative Organization for the Japan World Exposition '70, The American Ceramic Society, The Australasian Ceramic Society, The Chinese Ceramic Society, The Korean Ceramic Society, Joint Research Consortium of Synergy Ceramics/Fine Ceramics Research Association, Nanotechnology Researchers Network Center of Japan, The Special Coordination Funds for Promoting Science and Technology, Japan National Tourist Organization, Aichi Prefectural Government, CASIO SCIENCE PROMOTION FOUNDATION, DAIKO FOUNDATION, Nagoya Convention and Visitors Bureau, The Asahi Glass Foundation, The Kao Foundation For Arts And Sciences, The Murata Science Foundation, The Ogasawara Foundation for the Promotion of Science & Engineering, ASAHI GLASS CO., LTD. Research Center, CENTRAL GLASS CO., LTD., ELECTRIC GLASS INDUSTRY ASSOCIATION OF JAPAN (EGAJ), Hattori Company, Ltd., Hitachi Research Laboratory, Hitachi, Ltd., HOYA CORPORATION, INAX Corporation, ITOCHU CERATECH CORP., Japan Cement Association, KYOCERA Corporation, KYUSHU REFRACTORIES CO., LTD., MINO CERAMIC CO., LTD., Murata Manufacturing Co., Ltd., NGK INSULATORS LTD., NGK SPARK PLUG CO., LTD., NICHIAS Corporation, NIKKO COMPANY, Nippon Electric Glass Co., Ltd., Nippon Sheet Glass Co., Ltd., NORITAKE CO., LIMITED, Tokuyama Corporation, TOTO LTD.

Papers

Hydrothermal Synthesis of Nanosize Oxide Particles

Yuko Sawaki, Kazutaka Matsuo, Mikio Kishimoto

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Keywords: Nanosize particles, Hydrothermal synthesis, Cerium oxide particles, Zirconium oxide particles, Platelet-shape

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

We synthesized various kinds of nanosize oxide particles with the particle size of 2-100 nm by the combination of precipitation method and hydrothermal treatment at temperature lower than 200°C. The cerium oxide particles obtained only by the hydrothermal treatment were single crystal with platelet shape even at a particle size of about 2 nm, and the platelet plane was identified to be (111) from the observation of lattice images. By the heating at 100-600°C in air, the particle size was increased from about 2 nm to 15 nm maintaining the platelet shape with elevating the temperature. In the zirconium oxide particles, it was confirmed that both monoclinic and tetragonal phases were obtained by the control of synthesis conditions in the precipitation hydrothermal treatment at a temperature lower than 200°C without heating at higher temperature. The typical particle sizes of monoclinic and tetragonal phases were about 7 nm and 100 nm. The crystal constants of these cerium and zirconium oxide particles were nearly in agreement with those of balk oxides.

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