Influence of aging on the properties of cerium oxide nanoparticles - Implications to quantum confinement effect

Satyanarayana V N T Kuchibhatla, A. S. Karakoti, S. Thevuthasan, S. Seal, D. R. Baer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Cerium oxide (ceria) nanoparticles are widely studied for their current and potential use in catalytic, energy, environment protection and bio-medical applications. The performance of ceria in most of the applications is dependent on the ability of cerium to switch between its +3 and +4 oxidation states. We synthesized ceria nanoparticles in several aqueous media and measured their oxidation states as a function of time using UV-Visible spectroscopy. By following changes in the absorption edge, we observed that sample synthesis conditions and processing history affect the oxidation state of cerium. These time dependent, environmentally induced changes in the band edge likely contribute to inconsistencies in the literature regarding quantum-confinement effects for ceria nanoparticles.

Original languageEnglish
Title of host publicationProceedings of the IEEE Conference on Nanotechnology
Pages646-650
Number of pages5
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 11th IEEE International Conference on Nanotechnology, NANO 2011 - Portland, OR
Duration: 15 Aug 201119 Aug 2011

Other

Other2011 11th IEEE International Conference on Nanotechnology, NANO 2011
CityPortland, OR
Period15/8/1119/8/11

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Keywords

  • Cerium Oxide
  • Nanoparticles
  • Quantum Confinement

ASJC Scopus subject areas

  • Bioengineering
  • Electrical and Electronic Engineering
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Kuchibhatla, S. V. N. T., Karakoti, A. S., Thevuthasan, S., Seal, S., & Baer, D. R. (2011). Influence of aging on the properties of cerium oxide nanoparticles - Implications to quantum confinement effect. In Proceedings of the IEEE Conference on Nanotechnology (pp. 646-650). [6144639] https://doi.org/10.1109/NANO.2011.6144639