Blue light emitting UV excited photoluminescence in sonochemically synthesized ceria-zirconia nanocomposites

研究成果: Article

2 引文 (Scopus)

摘要

The present work brings forth an attempt to synthesize ceria-zirconia nano composites by sonochemical synthesis and the as-prepared nanopowder was heat treated at different calcination temperatures say 600°C, 700°C and 800°C. The structural and optical characteristics of the Ce0.5Zr0.5O2 nanocomposites were studied. Phase segregation is observed due to formation of dual phase binary oxide system. Zirconia is stabilized to tetragonal phase forming tetragonally stabilized zirconia polycrystals (TZP) whereas ceria is in cubic phase. The crystallite size and crystallinity of the nanocomposites increases with increasing calcination temperature. The average crystallite size of ZrO2 and CeO2 are in the range 7-10 nm and 11-57 nm respectively in the nanocomposite. The photonic band gap energy was determined to be 5.08 eV from the Kubelka-Munk plot using UV Diffuse Reflectance Spectroscopy. The Ce0.5Zr0.5O2 nanocomposite exhibits photoluminescence at room temperature with a broad emission in the blue region of the visible spectrum.

原文English
頁(從 - 到)1634-1638
頁數5
期刊International Journal of ChemTech Research
7
發行號3
出版狀態Published - 2015 一月 1

指紋

Cerium compounds
Zirconia
Nanocomposites
Photoluminescence
Crystallite size
Calcination
Photonic band gap
Polycrystals
Temperature
Oxides
Spectroscopy
zirconium oxide
Composite materials

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

引用此文

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title = "Blue light emitting UV excited photoluminescence in sonochemically synthesized ceria-zirconia nanocomposites",
abstract = "The present work brings forth an attempt to synthesize ceria-zirconia nano composites by sonochemical synthesis and the as-prepared nanopowder was heat treated at different calcination temperatures say 600°C, 700°C and 800°C. The structural and optical characteristics of the Ce0.5Zr0.5O2 nanocomposites were studied. Phase segregation is observed due to formation of dual phase binary oxide system. Zirconia is stabilized to tetragonal phase forming tetragonally stabilized zirconia polycrystals (TZP) whereas ceria is in cubic phase. The crystallite size and crystallinity of the nanocomposites increases with increasing calcination temperature. The average crystallite size of ZrO2 and CeO2 are in the range 7-10 nm and 11-57 nm respectively in the nanocomposite. The photonic band gap energy was determined to be 5.08 eV from the Kubelka-Munk plot using UV Diffuse Reflectance Spectroscopy. The Ce0.5Zr0.5O2 nanocomposite exhibits photoluminescence at room temperature with a broad emission in the blue region of the visible spectrum.",
author = "Manoharan Divinah and Loganathan Aswaghosh and {Victor Jaya}, N.",
year = "2015",
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TY - JOUR

T1 - Blue light emitting UV excited photoluminescence in sonochemically synthesized ceria-zirconia nanocomposites

AU - Divinah, Manoharan

AU - Aswaghosh, Loganathan

AU - Victor Jaya, N.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - The present work brings forth an attempt to synthesize ceria-zirconia nano composites by sonochemical synthesis and the as-prepared nanopowder was heat treated at different calcination temperatures say 600°C, 700°C and 800°C. The structural and optical characteristics of the Ce0.5Zr0.5O2 nanocomposites were studied. Phase segregation is observed due to formation of dual phase binary oxide system. Zirconia is stabilized to tetragonal phase forming tetragonally stabilized zirconia polycrystals (TZP) whereas ceria is in cubic phase. The crystallite size and crystallinity of the nanocomposites increases with increasing calcination temperature. The average crystallite size of ZrO2 and CeO2 are in the range 7-10 nm and 11-57 nm respectively in the nanocomposite. The photonic band gap energy was determined to be 5.08 eV from the Kubelka-Munk plot using UV Diffuse Reflectance Spectroscopy. The Ce0.5Zr0.5O2 nanocomposite exhibits photoluminescence at room temperature with a broad emission in the blue region of the visible spectrum.

AB - The present work brings forth an attempt to synthesize ceria-zirconia nano composites by sonochemical synthesis and the as-prepared nanopowder was heat treated at different calcination temperatures say 600°C, 700°C and 800°C. The structural and optical characteristics of the Ce0.5Zr0.5O2 nanocomposites were studied. Phase segregation is observed due to formation of dual phase binary oxide system. Zirconia is stabilized to tetragonal phase forming tetragonally stabilized zirconia polycrystals (TZP) whereas ceria is in cubic phase. The crystallite size and crystallinity of the nanocomposites increases with increasing calcination temperature. The average crystallite size of ZrO2 and CeO2 are in the range 7-10 nm and 11-57 nm respectively in the nanocomposite. The photonic band gap energy was determined to be 5.08 eV from the Kubelka-Munk plot using UV Diffuse Reflectance Spectroscopy. The Ce0.5Zr0.5O2 nanocomposite exhibits photoluminescence at room temperature with a broad emission in the blue region of the visible spectrum.

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