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Unusual Reuniting of Barium Titanate Nanoparticles

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A solvothermal method to synthesize barium titanate nanoparticles is employed. In this method many raw materials such as oleic acid, surfactant, sodium hydroxide, alkali barium acetate, alcohol, tetrabutyl titanate are used. When the samples are collected, oleic acid which has mush an account will cover the whole particles. To make the samples cleaner, nitric acid is used to transition oleic acid to elaidic acid which is lighter than water then it will float up to be removed. In the progress to wash off the oleic acid the particles were found to reunite unusually: bigger and cubic particles are formed and the shape seems like single crystal but they are reunitions indeed, we used HTEM to prove this. It means self-assembling might happen through the progress, the spontaneous polarization orient, polarity of molecules will affect this progess.

barium titanateunusual reunitingoleic acidself- assembly

Xiaoquan Zhang、Xiaohui Wang、Tieyu Sun、Aili Cui、Longtu Li

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State Key Lab of Advanced Ceramics & Fine Processing, Department of Materials Sciences & Engineering, Tsinghua University, Beijing, China, 100084

Department of Chemistry, Tsinghua University, Beijing, China, 100084

2010

10.4028/www.scientific.net/KEM.434-435.860

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.434/435
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