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Self-Assembly of Cerium Oxide Nanostructures in Ice Molds

Karakoti, Ajay S., Kuchibhatla, Satyanarayana V. T. N., Baer, Donald R., Thevuthasan, Suntharampillai, Sayle, Dean C., Seal, Sudipta (2008) Self-Assembly of Cerium Oxide Nanostructures in Ice Molds. Small, 4 (8). pp. 1210-1216. ISSN 1613-6829. (doi:10.1002/smll.200800219) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1002/smll.200800219

Abstract

The formation of nanorods, driven by the physicochemical phenomena during the freezing and after the aging of frozen ceria nanoparticle suspensions, is reported. During freezing of a dilute aqueous solution of CeO2 nanocrystals, some nuclei remain in solution while others are trapped inside micro- and nanometer voids formed within the growing ice front. Over time (2–3 weeks) the particles trapped within the nanometer-wide voids in the ice combine by an oriented attachment process to form ceria nanorods. The experimental observations are consistent with molecular dynamics simulations of particle aggregation in constrained environments. These observations suggest a possible strategy for the templated formation of nanostructures through self-assembly by exploiting natural phenomena, such as voids formed during freezing of water. This research suggests a very simple, green chemical route to guide the formation of one- and three-dimensional self-assembled nanostructures.

Item Type: Article
DOI/Identification number: 10.1002/smll.200800219
Uncontrolled keywords: cerium oxide; ice; nanorods; self-assembly; templates
Subjects: Q Science
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Stewart Brownrigg
Date Deposited: 07 Mar 2014 00:05 UTC
Last Modified: 23 Jan 2020 04:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/40489 (The current URI for this page, for reference purposes)
Sayle, Dean C.: https://orcid.org/0000-0001-7227-9010
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