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Publication Type : Journal Article
Publisher : International Journal of Nanoparticles
Source : International Journal of Nanoparticles, Inderscience Enterprises Ltd., Volume 9, Number 2, p.88-100 (2017)
Keywords : Annealing, mineraliser, phase transformation, surfactant, zirconia nanoparticles
Campus : Coimbatore, Kochi
School : School of Arts and Sciences, School of Engineering
Department : Department of Sciences, Sciences
Year : 2017
Abstract : The phase transformation mechanisms of zirconia nano crystals obtained on thermal treatment of polyvinyl pyrrolidone (PVP) and cetyltrimethylammoniumbromide (CTAB) capped hydrous amorphous zirconia (HAZ) on thermal treatment are investigated. In PVP assisted synthesis, tetragonal zirconia nanoparticles formation is the predominant one as compared to CTAB assisted synthesis. The decomposition of surfactants capped on HAZ with temperature (526°C for PVP and 466°C for CTAB) and subsequent interaction of the by-products with zirconia nanoparticles are responsible for tetragonal to monoclinic phase transformation. The decomposition temperature of capped surfactants is observed from thermogravimetric analysis (TGA) and subsequent interaction of by-products with zirconia nanoparticles at different temperatures is investigated from FTIR spectra. Further the structure of nanoparticles annealed at different temperatures is investigated using XRD, micro Raman and photoluminescence (PL) analysis. Copyright © 2017 Inderscience Enterprises Ltd.
Cite this Research Publication : Sreedevi R. Mohan, A. Uma Maheswari, M. Sivakumar, "Structural Transformation of Polymeric and Cationic Capped Zirconia Nanoparticles with Temperature," International Journal of Nanoparticles (IJNP), Volume 9, 2017, Pages 88-100.