Influence of aging and environment on nanoparticle chemistry: Implication to confinement effects in nanoceria

Satyanarayana V N T Kuchibhatla, A. S. Karakoti, D. R. Baer, S. Samudrala, M. H. Engelhard, J. E. Amonette, S. Thevuthasan, S. Seal

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The oxidation state switching of cerium in cerium oxide nanoparticles is studied in detail. The influence of synthesis medium, aging time, and local environment on the oxidation state switching, between +3 and +4, is analyzed by tracking the absorption edge using UV-visible spectroscopy. It is observed that by tuning the local environment, the chemistry of the nanoparticles could be altered. These time-dependent, environmentally induced changes likely contribute to inconsistencies in the literature regarding quantum-confinement effects for ceria nanoparticles. The results in this Article indicate that there is a need to carry out comprehensive analysis of nanoparticles while considering the influence of synthesis and processing conditions, aging time and local environment.

Original languageEnglish
Pages (from-to)14108-14114
Number of pages7
JournalJournal of Physical Chemistry C
Volume116
Issue number26
DOIs
Publication statusPublished - 5 Jul 2012
Externally publishedYes

Fingerprint

Aging of materials
chemistry
Nanoparticles
nanoparticles
Cerium
cerium oxides
Oxidation
oxidation
Quantum confinement
Cerium compounds
synthesis
cerium
Tuning
tuning
Spectroscopy
Oxides
ceric oxide
Processing
spectroscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Kuchibhatla, S. V. N. T., Karakoti, A. S., Baer, D. R., Samudrala, S., Engelhard, M. H., Amonette, J. E., ... Seal, S. (2012). Influence of aging and environment on nanoparticle chemistry: Implication to confinement effects in nanoceria. Journal of Physical Chemistry C, 116(26), 14108-14114. https://doi.org/10.1021/jp300725s

Influence of aging and environment on nanoparticle chemistry : Implication to confinement effects in nanoceria. / Kuchibhatla, Satyanarayana V N T; Karakoti, A. S.; Baer, D. R.; Samudrala, S.; Engelhard, M. H.; Amonette, J. E.; Thevuthasan, S.; Seal, S.

In: Journal of Physical Chemistry C, Vol. 116, No. 26, 05.07.2012, p. 14108-14114.

Research output: Contribution to journalArticle

Kuchibhatla, SVNT, Karakoti, AS, Baer, DR, Samudrala, S, Engelhard, MH, Amonette, JE, Thevuthasan, S & Seal, S 2012, 'Influence of aging and environment on nanoparticle chemistry: Implication to confinement effects in nanoceria', Journal of Physical Chemistry C, vol. 116, no. 26, pp. 14108-14114. https://doi.org/10.1021/jp300725s
Kuchibhatla SVNT, Karakoti AS, Baer DR, Samudrala S, Engelhard MH, Amonette JE et al. Influence of aging and environment on nanoparticle chemistry: Implication to confinement effects in nanoceria. Journal of Physical Chemistry C. 2012 Jul 5;116(26):14108-14114. https://doi.org/10.1021/jp300725s
Kuchibhatla, Satyanarayana V N T ; Karakoti, A. S. ; Baer, D. R. ; Samudrala, S. ; Engelhard, M. H. ; Amonette, J. E. ; Thevuthasan, S. ; Seal, S. / Influence of aging and environment on nanoparticle chemistry : Implication to confinement effects in nanoceria. In: Journal of Physical Chemistry C. 2012 ; Vol. 116, No. 26. pp. 14108-14114.
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