Design and characterization of rotational multicomponent catalytic nanomotors

J. G. Gibbs; Y. P. Zhao

doi:10.1002/smll.200900686

Design and characterization of rotational multicomponent catalytic nanomotors

J. G. Gibbs, Y. P. Zhao

Research output: Contribution to journal › Article › peer-review

94 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 language	English (US)
Pages (from-to)	2304-2308
Number of pages	5
Journal	Small
Volume	5
Issue number	20
DOIs	https://doi.org/10.1002/smll.200900686
State	Published - Oct 16 2009
Externally published	Yes

Keywords

Dynamic shadowing growth
Microbeads
Nanomotors
Nanorods

ASJC Scopus subject areas

Biotechnology
Biomaterials
General Chemistry
General Materials Science

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10.1002/smll.200900686

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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.",

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AU - Zhao, Y. P.

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AB - 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.

KW - Dynamic shadowing growth

KW - Microbeads

KW - Nanomotors

KW - Nanorods

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Design and characterization of rotational multicomponent catalytic nanomotors

Abstract

Keywords

ASJC Scopus subject areas

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