NADH electrooxidation using carbon paste electrodes modified with nitro-fluorenone derivatives immobilized on zirconium phosphate
(2004) In Journal of Electroanalytical Chemistry 564. p.167-178- Abstract
- The basic electrochemistry of carbon paste electrodes modified with two new redox mediators, nitro-fluorenone derivatives, one neutral and one negatively charged, adsorbed on zirconium phosphate has been studied as well as their ability to oxidize NADH electrocatalytically. Cyclic voltammetry of these chemically modified electrodes performed in different aqueous buffer solutions at different pHs revealed that the immobilized redox species present very stable redox properties and the formal potential is virtually independent of the pH and/or the constituents of the contacting solution. The second order rate constants for the electrocatalytic oxidation of NADH were evaluated from rotating disk electrode experiments, and found to be of the... (More)
- The basic electrochemistry of carbon paste electrodes modified with two new redox mediators, nitro-fluorenone derivatives, one neutral and one negatively charged, adsorbed on zirconium phosphate has been studied as well as their ability to oxidize NADH electrocatalytically. Cyclic voltammetry of these chemically modified electrodes performed in different aqueous buffer solutions at different pHs revealed that the immobilized redox species present very stable redox properties and the formal potential is virtually independent of the pH and/or the constituents of the contacting solution. The second order rate constants for the electrocatalytic oxidation of NADH were evaluated from rotating disk electrode experiments, and found to be of the order of between 106 and 107 M−1 s−1, among the highest reported so far compared with literature values. The catalytic efficiency can be enhanced by addition of Ca2+ ions to the electrolyte solution and it is shown that Ca2+ affects both the neutral and negatively charged mediator. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/141289
- author
- Munteanu, Florentina LU ; Mano, N ; Kuhn, A and Gorton, Lo LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Electroanalytical Chemistry
- volume
- 564
- pages
- 167 - 178
- publisher
- Elsevier
- external identifiers
-
- wos:000220097900019
- scopus:1342328145
- ISSN
- 1572-6657
- DOI
- 10.1016/j.jelechem.2003.10.034
- language
- English
- LU publication?
- yes
- additional info
- Special issue in honour of Rolando Guidelli on the occasion of his 65th birthday 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
- 496a97f9-beed-418b-9f9a-6b527e6452d9 (old id 141289)
- date added to LUP
- 2016-04-01 17:04:27
- date last changed
- 2022-02-20 18:26:30
@article{496a97f9-beed-418b-9f9a-6b527e6452d9, abstract = {{The basic electrochemistry of carbon paste electrodes modified with two new redox mediators, nitro-fluorenone derivatives, one neutral and one negatively charged, adsorbed on zirconium phosphate has been studied as well as their ability to oxidize NADH electrocatalytically. Cyclic voltammetry of these chemically modified electrodes performed in different aqueous buffer solutions at different pHs revealed that the immobilized redox species present very stable redox properties and the formal potential is virtually independent of the pH and/or the constituents of the contacting solution. The second order rate constants for the electrocatalytic oxidation of NADH were evaluated from rotating disk electrode experiments, and found to be of the order of between 106 and 107 M−1 s−1, among the highest reported so far compared with literature values. The catalytic efficiency can be enhanced by addition of Ca2+ ions to the electrolyte solution and it is shown that Ca2+ affects both the neutral and negatively charged mediator.}}, author = {{Munteanu, Florentina and Mano, N and Kuhn, A and Gorton, Lo}}, issn = {{1572-6657}}, language = {{eng}}, pages = {{167--178}}, publisher = {{Elsevier}}, series = {{Journal of Electroanalytical Chemistry}}, title = {{NADH electrooxidation using carbon paste electrodes modified with nitro-fluorenone derivatives immobilized on zirconium phosphate}}, url = {{http://dx.doi.org/10.1016/j.jelechem.2003.10.034}}, doi = {{10.1016/j.jelechem.2003.10.034}}, volume = {{564}}, year = {{2004}}, }