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Mediator-modified electrodes for catalytic NADH oxidation: high rate constants at interesting overpotentials.

Munteanu, Florentina LU ; Mano, N ; Kuhn, A and Gorton, Lo LU (2002) In Bioelectrochemistry 56(1-2). p.67-72
Abstract
Carbon paste electrodes were modified with a nitrofluorenone derivative, 2,4,7-trinitro-9-fluorenone, adsorbed on zirconium phosphate (ZP). After electrochemical reduction of the fluorenone derivative, it turns into a very efficient mediator for electrocatalytic NADH oxidation, with a formal potential of about +250 mV vs. Ag/AgCl. The electrochemistry and the electrocatalytic properties of the mediator were investigated with cyclic voltammetry and rotating disk electrode methodology. The second order rate constant with NADH was evaluated and found to be higher than 10(6) M(-1) s(-1), thus approaching true diffusion controlled currents for NADH oxidation.
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Bioelectrochemistry
volume
56
issue
1-2
pages
67 - 72
publisher
Elsevier
external identifiers
  • wos:000176715700016
  • pmid:12009446
  • scopus:0037093891
ISSN
1878-562X
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Analytical Chemistry (S/LTH) (011001004)
id
1eaa2d41-7ce7-492a-8f46-ecd9e87b803f (old id 108198)
alternative location
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12009446&dopt=Abstract
date added to LUP
2016-04-01 12:03:48
date last changed
2020-06-03 01:53:20
@article{1eaa2d41-7ce7-492a-8f46-ecd9e87b803f,
  abstract     = {Carbon paste electrodes were modified with a nitrofluorenone derivative, 2,4,7-trinitro-9-fluorenone, adsorbed on zirconium phosphate (ZP). After electrochemical reduction of the fluorenone derivative, it turns into a very efficient mediator for electrocatalytic NADH oxidation, with a formal potential of about +250 mV vs. Ag/AgCl. The electrochemistry and the electrocatalytic properties of the mediator were investigated with cyclic voltammetry and rotating disk electrode methodology. The second order rate constant with NADH was evaluated and found to be higher than 10(6) M(-1) s(-1), thus approaching true diffusion controlled currents for NADH oxidation.},
  author       = {Munteanu, Florentina and Mano, N and Kuhn, A and Gorton, Lo},
  issn         = {1878-562X},
  language     = {eng},
  number       = {1-2},
  pages        = {67--72},
  publisher    = {Elsevier},
  series       = {Bioelectrochemistry},
  title        = {Mediator-modified electrodes for catalytic NADH oxidation: high rate constants at interesting overpotentials.},
  url          = {http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12009446&dopt=Abstract},
  volume       = {56},
  year         = {2002},
}