Design and characterization of rotational multicomponent catalytic nanomotors

J. G. Gibbs, Y. P. Zhao

Research output: Contribution to journalArticlepeer-review

86 Scopus citations

Abstract

Multicomponent rotational nanomotors consisting of Pt-coated TiO 2 nanoarms grown upon ≈2.01-μm-diameter silica microbeads designed by dynamic shadowing growth are presented. When exposed to H 2O2, the structures rotate about an axis through the center of the microbead and perpendicular to the TiO2 nanoarm at a rate of 0.15Hz per % H2O2 concentration. The rotational frequency increases parabolically when the surface tension of the solution is altered by the addition of sodium dodecyl sulphate; both relationships are explainable by a nanobubble-ejection model.

Original languageEnglish (US)
Pages (from-to)2304-2308
Number of pages5
JournalSmall
Volume5
Issue number20
DOIs
StatePublished - Oct 16 2009
Externally publishedYes

Keywords

  • Dynamic shadowing growth
  • Microbeads
  • Nanomotors
  • Nanorods

ASJC Scopus subject areas

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

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