Title

Influence Of Aging And Environment On Nanoparticle Chemistry: Implication To Confinement Effects In Nanoceria

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. © 2012 American Chemical Society.

Publication Date

7-5-2012

Publication Title

Journal of Physical Chemistry C

Volume

116

Issue

26

Number of Pages

14108-14114

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/jp300725s

Socpus ID

84863691007 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84863691007

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