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Published in: Journal of Sol-Gel Science and Technology 1/2008

01-04-2008 | Original Paper

Fabrication of lead titanate nanocrystals via gas-bubbling sol–gel process

Authors: Cai Jun, Hu Zhengxin, Liu Junliang, Kong Xiangrong, Zeng Yanwei

Published in: Journal of Sol-Gel Science and Technology | Issue 1/2008

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Abstract

With Pb(CH3COO)2 · 3H2O and Ti(C4H9O)4 as precursor materials, (CH3)2CHOH and ammonium tartrate as solvent and surfactant, respectively, the ferroelectric lead titanate (PT) nanocrystals of tailorable sizes were successfully prepared via a novel gas-bubbling sol–gel process, in which water and ammonia were carried into the solution by nitrogen gas through a bundle of stainless steel needle-like tubes, and a subsequent heating treatment in an oxygen-free atmosphere. It has been found that the dimensions of resulting nanocrystals are strongly affected by the internal diameter of tubes for gas-bubbling, while the velocity of carrier gas flowing in the tubes mainly controls the bubbling rate or the yield of nanocrystals. The possible mechanism for the formation of size-tailorable nanocrystals via such a gas-bubling sol–gel process is discussed in this paper.

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Metadata
Title
Fabrication of lead titanate nanocrystals via gas-bubbling sol–gel process
Authors
Cai Jun
Hu Zhengxin
Liu Junliang
Kong Xiangrong
Zeng Yanwei
Publication date
01-04-2008
Publisher
Springer US
Published in
Journal of Sol-Gel Science and Technology / Issue 1/2008
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-008-1705-4

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