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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.122  No.1427 (July) (2014)  >  pp.547-551

Journal of the Ceramic Society of Japan
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Solvothermal synthesis of KNbO3 nanocubes using various organic solvents

Kouichi NAKASHIMA1), Shintaro UENO1), Satoshi WADA1)
1) Material Science and Technology, Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi

Potassium niobate (KNbO3) nanocubes were synthesized via a solvothermal method using various organic solvents as the reaction medium. The solvothermal synthesis was conducted in different alcohols and ether-type solvents, and in mixtures of alcohol and ether-type solvents. The starting materials for the solvothermal synthesis were niobium oxide and potassium hydroxide. X-ray diffraction confirmed the presence of perovskite-structured KNbO3. The morphology of KNbO3 was investigated using scanning electron microscopy, transmission electron microscopy, and scanning transmission electron microscopy (STEM). Energy-dispersive X-ray (EDX) spectrometry was used to determine the elements present in the KNbO3. The KNbO3 nanocubes were the same length as the alkyl chain in the solvent that was used. The STEM and EDX analyses indicated that three elements, potassium, niobium, and oxygen, were present in the KNbO3 nanocubes, and that these elements were distributed homogeneously throughout the nanocubes.

KNbO3, Nanocube, Solvothermal method, Perovskite oxide

Received: December 14, 2013
Accepted: May 02, 2014 , Published online: July 01, 2014
Copyright © 2014 The Ceramic Society of Japan



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