Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments.

Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments. Research Abstract Details 

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Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments. Abstract Text:

Ran Tel-Vered,Darren A Walsh,Masoud A Mehrgardi,Allen J Bard,

The electrochemical behavior of electrodes made by sealing carbon nanofibers in glass or with electrophoretic paint has been studied by scanning electrochemical microscopy (SECM). Because of their small electroactive surface area, conical geometry with a low aspect ratio and high overpotential for proton and oxygen reduction, carbon nanofiber (CNF) electrodes are promising candidates for producing electrode nanogaps, imaging with high spatial resolution and for the electrodeposition of single metal nanoparticles (e.g., Pt, Pd) for studies as electrocatalysts. By using the feedback mode of the SECM, a CNF tip can produce a gap that is smaller than 20 nm from a platinum disk. Similarly, the SECM used in a tip-collection substrate-generation mode, which subsequently shows a feedback interaction at short distances, makes it possible to detect a single CNF by another CNF and then to form a nanometer gap between the two electrodes. This approach was used to image vertically aligned CNF arrays. This method is useful in the detection in a homogeneous solution of short-lifetime intermediates, which can be electrochemically generated at one electrode and collected at the second at distances that are equivalent to a nanosecond time scale.

Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments. Publishing Authors By Initials

R Tel-Vered,DA Walsh,MA Mehrgardi,AJ Bard,

For similar natural sciences: nanotechnology research abstracts see: natural sciences: nanotechnology research

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Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Analytical chemistry

VOLUME: 78

Page Numbers: 6959-66

Journal Abbreviation: Anal. Chem.

ISSN: 0003-2700

DAY: 1

MONTH: Oct

YEAR: 2006

Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 370536

Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments. Keywords Mesh Terms:

KEYWORDS: Nanotechnology

MESH TERMS: methods

Chemical & Substance for Abstract: Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments. Information

Substance Name: Carbon

Registry Number: 7440-44-0

Grant and Affiliation Information for Carbon nanofiber electrodes and controlled nanogaps for scanning electrochemical microscopy experiments.

AFFILIATION: Department of Chemistry and Biochemistry and the Center for Nano and Molecular Science, The University of Texas at Austin, Austin, Texas 78712, USA.

Country: United States

AGENCY: United States NIBIB

GRANT: 1-R01EB000433-01

ACRONYM: EB

MEDLINETA: Anal Chem

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