Hydrothermal Synthesis of SrTiO3 Nanoplates Through Epitaxial Self-Assembly of Nanocubes

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Abstract:

SrTiO3 nanoplates are obtained by the precipitation of an aqueous gel suspension. The gel suspension is prepared by hydrolysis of a Titanium isopropoxide [Ti(OCH(CH3)2)4] solution with NaOH and the addition of Sr(NO3)2. The amount of additive oleic acid plays a significant role in the formation of pure SrTiO3 phase with specific morphologies. The results of transmission electron microscopy (TEM) and electron diffraction (ED) investigations provide evidences that the oriented aggregation of small nanocubes is the dominant growth mechanism for the formation of the observed SrTiO3 nanoplates. The primary nanocrystals are self-assembled in a highly oriented fashion, producing defective single-crystal particles. The above results show that the directional aggregation process can be controlled by changing the temperature of the suspension as well as by adding organic molecules, by which the SrTiO3 particles can be obtained with a controlled size and shape.

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2012.5676

Publication date: March 1, 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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