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Sol-Gel Template Synthesis, Structural Characterization and Growth Mechanism of Barium Zirconate Nanotubes

Singh, Satyendra and Krupanidhi, SB (2009) Sol-Gel Template Synthesis, Structural Characterization and Growth Mechanism of Barium Zirconate Nanotubes. In: Current Nanoscience, 5 (3). pp. 339-343.

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Official URL: http://www.benthamdirect.org/pages/content.php?CNA...

Abstract

In this paper, we report the synthesis of barium zirconate, BaZrO3, (BZ) nanotubes fabricated by the modified sol-gel method within the nanochannels of anodic aluminum oxide (AAO) templates. The morphology, structure, and composition of as prepared nanotubes were characterized by means of X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), selected-area electron diffraction ( SAED), high resolution TEM (HRTEM) and energy-dispersive X-ray spectroscopy (EDX). The results of XRD and SAED indicated that postannealed (at 650 degrees C for 1 h) BZ nanotubes (BZNTs) exhibited a polycrystalline cubic perovskite crystal structure. SEM and TEM analysis revealed that BZNTs possessed a uniform length and diameter (similar to 200 nm) and the thickness of the wall of the BZNTs was about 20 nm. Y-junctions, multiple branching and typical T-junctions were also observed in some BZNTs. EDX analysis demonstrated that stoichiometric BaZrO3 was formed. HRTEM image confirmed that the obtained BZNTs were composed of nanoparticles in the range of 5-10 nm. The possible formation mechanism of BZNTs was discussed.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Bentham Science Publishers Ltd.
Keywords: Nanofabrication; nanotubes; Y-junctions; electron microscopy; barium zirconato
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 02 Dec 2009 05:42
Last Modified: 02 Dec 2009 05:42
URI: http://eprints.iisc.ernet.in/id/eprint/24993

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