Self-assembly of cerium oxide nanostructures in ice molds

Ajay S. Karakoti, Satyanarayana V N T Kuchibhatla, Donald R. Baer, Suntharampillai Thevuthasan, Dean C. Sayle, Sudipta Seal

Research output: Contribution to journalArticle

25 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1210-1216
Number of pages7
JournalSmall
Volume4
Issue number8
DOIs
Publication statusPublished - Aug 2008
Externally publishedYes

Fingerprint

Nanostructures
Ice
Molds
Cerium
Freezing
Self assembly
Nanotubes
Fungi
Cerium compounds
Nanorods
Nanoparticles
Oxides
Chemical Phenomena
Molecular Dynamics Simulation
Nanocrystals
Molecular dynamics
Suspensions
Agglomeration
Aging of materials
Water

Keywords

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

ASJC Scopus subject areas

  • Biomaterials
  • Engineering (miscellaneous)
  • Biotechnology
  • Medicine(all)

Cite this

Karakoti, A. S., Kuchibhatla, S. V. N. T., Baer, D. R., Thevuthasan, S., Sayle, D. C., & Seal, S. (2008). Self-assembly of cerium oxide nanostructures in ice molds. Small, 4(8), 1210-1216. https://doi.org/10.1002/smll.200800219

Self-assembly of cerium oxide nanostructures in ice molds. / Karakoti, Ajay S.; Kuchibhatla, Satyanarayana V N T; Baer, Donald R.; Thevuthasan, Suntharampillai; Sayle, Dean C.; Seal, Sudipta.

In: Small, Vol. 4, No. 8, 08.2008, p. 1210-1216.

Research output: Contribution to journalArticle

Karakoti, AS, Kuchibhatla, SVNT, Baer, DR, Thevuthasan, S, Sayle, DC & Seal, S 2008, 'Self-assembly of cerium oxide nanostructures in ice molds', Small, vol. 4, no. 8, pp. 1210-1216. https://doi.org/10.1002/smll.200800219
Karakoti AS, Kuchibhatla SVNT, Baer DR, Thevuthasan S, Sayle DC, Seal S. Self-assembly of cerium oxide nanostructures in ice molds. Small. 2008 Aug;4(8):1210-1216. https://doi.org/10.1002/smll.200800219
Karakoti, Ajay S. ; Kuchibhatla, Satyanarayana V N T ; Baer, Donald R. ; Thevuthasan, Suntharampillai ; Sayle, Dean C. ; Seal, Sudipta. / Self-assembly of cerium oxide nanostructures in ice molds. In: Small. 2008 ; Vol. 4, No. 8. pp. 1210-1216.
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