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

Manoharan Divinah, Loganathan Aswaghosh, N. Victor Jaya

研究成果: Article同行評審

2 引文 斯高帕斯(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 1月 1

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)

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