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Characterization and field emission performance of electrochemically synthesized FeOOH nanowalls

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Abstract
We report a direct method for the synthesis of Iron(III) oxyhydroxide (FeOOH) nanowalls using an electrochemical technique at room temperature. The length of the nanowalls can be varied depending on the number of repetitive potentiostatic pulse cycles during the electrochemical process. The samples were characterized by ex-situ techniques such as SEM, XPS, FTIR, and TEM. Field emission performances of these nanowalls are also reported for the first time. The measured turn-on electric field is about 4.8 V/μm, with emission current density of 0.12 mA/cm 2 at 7.3 V/μm. This technique provides a simple alternative method for large area synthesis of FeOOH nanowalls. Copyright © 2007 American Scientific Publishers All rights reserved.
Keywords
Electrochemical, Iron oxyhydroxide, Nanowall, Self-assembly
Source Title
Journal of Nanoscience and Nanotechnology
Publisher
Series/Report No.
Organizational Units
Organizational Unit
PHYSICS
dept
Organizational Unit
BIOLOGICAL SCIENCES
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Date
2007-09
DOI
10.1166/jnn.2007.870
Type
Article
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