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Synthesis, Structural Characterization and Formation Mechanism of Ferroelectric Bismuth Vanadate Nanotubes

Singh, Satyendra and Kumari, Neelam and Varma, KBR and Krupanidhi, SB (2009) Synthesis, Structural Characterization and Formation Mechanism of Ferroelectric Bismuth Vanadate Nanotubes. In: Journal of Nanoscience and Nanotechnology, 9 (11). pp. 6549-6553.

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We report the synthesis and structural characterization of ferroelectric bismuth vanadate (Bi2VO5.5) (BVO) nanotubes within the nanoporous anodic aluminum oxide (AAO) templates via sol-gel method. The as-prepared BVO nanotubes were characterized by X-ray powder diffraction (XRD), Scanning Electron Microscope (SEM), High-Resolution Transmission Electron Microscope (HRTEM) and the stoichiometry of the nanotubes was established by energy-dispersive X-ray spectroscopy (EDX). Postannealed (675 degrees C for 1 h), BVO nanotubes were a polycrystalline and the XRD studies confirmed the crystal structure to be orthorhombic. The uniformity in diameter and length of the nanotubes as reveled by the TEM and SEM suggested that these were influenced to a guest extent by the thickness and pore diameter of the nanoporous AAO template. EDX analysis demonstrated the formation of stoichiometric Bi2VO5.5 phase. HRTEM confirmed that the obtained BVO nanotubes were made up of nanoparticles of 5-9 nm range. The possible formation mechanism of nanotubes was elucidated.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Scientific Publishers, 2009.
Keywords: Nanotubes; Nanofabrication; Sol-Gel Process; Anodic Alumina Template; Electron Microscopy; Bismuth Vanadate
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 21 Dec 2009 05:10
Last Modified: 21 Dec 2009 05:10
URI: http://eprints.iisc.ac.in/id/eprint/24530

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