Title

Self-Assembly Of Cerium Oxide Nanostructures In Ice Molds

Keywords

Cerium oxide; Ice; Nanorods; Self-assembly; Templates

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. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

Publication Date

8-1-2008

Publication Title

Small

Volume

4

Issue

8

Number of Pages

1210-1216

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1002/smll.200800219

Socpus ID

49749144167 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/49749144167

This document is currently not available here.

Share

COinS