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Facile hydrothermal synthesis of CeO2 nanopebbles
N Sabari Arul D Mangalaraj Jeong In Han
Volume 38 Issue 5 September 2015 pp 1135-1139
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https://www.ias.ac.in/article/fulltext/boms/038/05/1135-1139 -
Keywords
CeO2 ;nanopebbles ;structural ;XAS ;quantum confinement effect. -
Abstract
Cerium oxide (CeO2) nanopebbles have been synthesized using a facile hydrothermal method. X-ray diffraction pattern (XRD) and transmission electron microscopy analyses confirm the presence of CeO2 nanopebbles. XRD shows the formation of cubic fluorite CeO2 and the average particle size estimated from the Scherrer formula was found to be 6.69 nm. X-ray absorption spectrum of CeO2 nanopebbles exhibits two main sharp white lines at 880 and 898 eV due to the spin orbital splitting of 𝑀4 and 𝑀5. Optical absorption for the synthesized CeO2 nanopebbles exhibited a blue shift (𝐸g = 3.35 eV) with respect to the bulk CeO2 (𝐸g = 3.19 eV), indicating the existence of quantum confinement effects.
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Author Affiliations
N Sabari Arul1 2 D Mangalaraj2 Jeong In Han1
- Department of Chemical and Biochemical Engineering, Dongguk University-Seoul, 100715 Seoul, South Korea
- Department of Nanoscience and Technology, Bharathiar University, Coimbatore 641 046, India
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Dates
- Published
- September 2015
- Manuscript received
- 17 October 2014
- Accepted
- 13 April 2015
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