A simple maskless process for the fabrication of vertically aligned high density hematite and graphene/magnetite nanowires

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Vertically aligned iron oxide nanowire arrays were successfully synthesized via a cost-efficient maskless top-down approach. High density nanowires are formed by simple oxygen reactive ion etching of an iron-containing polymer film without any artificial mask. Highly crystalline hematite nanowires with a diameter of 38-45 nm and a high aspect ratio of 131 are uniformly produced over large areas after calcination. The high density graphene/magnetite nanostructure created by pyrolyzing iron oxide/organic nanowires with three-dimensional morphology provided highly enhanced Raman scattering with an enhancement factor of up to 7.0 x 10(4) due to trapping of the absorbed light in the three-dimensional graphene forest. Our maskless top-down approach to fabricate iron oxide nanowires offers unique advantages of a solution-based process to easily overcome the limit in the morphology and substrate-dependent properties of nanowire synthesis. This technique may have excellent practical potential as a simple, rapid, and reproducible process for the fabrication of high density and high aspect ratio iron oxide nanowires that are useful in various applications.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2017
Language
English
Article Type
Article
Keywords

ENHANCED RAMAN-SPECTROSCOPY; ELECTROCHEMICAL ENERGY-STORAGE; PHOTOELECTROCHEMICAL PROPERTIES; OXIDE; NANOSTRUCTURES; SUBSTRATE; GRAPHENE; SERS; PERFORMANCES; SCATTERING

Citation

JOURNAL OF MATERIALS CHEMISTRY C, v.5, no.6, pp.1313 - 1320

ISSN
2050-7526
DOI
10.1039/c6tc05162f
URI
http://hdl.handle.net/10203/223108
Appears in Collection
CH-Journal Papers(저널논문)
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