Vertically oriented single-wall carbon nanotube/enzyme on silicon as biosensor electrode

Document Type

Article

Publication Date

1-1-2005

Abstract

Thin films of vertically aligned individual single-wall carbon nanotubes (SWNTs) were deposited on silicon using a chemical vapor deposition (CVD) process. Oriented SWNT growth was achieved by employing two methods of catalyst precursor self-assembly followed by ethanol CVD. Using the silicon substrate as the working electrode in an electrochemical cell and the enzyme β-NAD (nicotinamide adenine dinucleotide) synthetase dissolved in a buffered electrolyte solution, the enzyme was attached at the nanotube ends. This was shown using scanning electron microscopy and cyclic voltammetry. Enzyme immobilization on the 1 nm to 2 nm diameter tube ends of the individual SWNTs will allow for dense packing of the enzyme and utilization of the electrode as an enzymatic sensor in a biofuel cell configuration.

Identifier

22944431841 (Scopus)

Publication Title

JOM

External Full Text Location

https://doi.org/10.1007/s11837-005-0132-z

ISSN

10474838

First Page

27

Last Page

29

Issue

6

Volume

57

Grant

DAAE30-02-C-1139

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