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Electrocatalytic Reduction of Hydrogen Peroxide on Palladium-Gold Codeposits on Glassy Carbon : Applications to the Design of Interference-Free Glucose Biosensor
Joint Authors
Horozova, Elena
Mussarlieva, Ruska
Dodevska, Totka
Dimcheva, Nina
Source
International Journal of Electrochemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-07-24
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Following our previous studies on the catalytic activity electrochemically codeposited on graphite Pd-Pt electrocatalysts for hydrogen peroxide electroreduction, a series of glassy carbon electrodes were modified with Pd or (Pd+Au) deposits aiming at the development of even more efficient electrocatalysts for the same process.
The resulting electrodes were found to be very effective at low applied potentials (−100 and −50 mV versus Ag/AgCl, 1 M KCl).
The surface topography of the electrode modified with Pd+Au mixed in proportions 90% : 10%, exhibiting optimal combination of sensitivity and linear dynamic range towards hydrogen peroxide electrochemical reduction, was studied with SEM and AFM.
The applicability of the same electrode as transducer in an amperometric biosensor for glucose assay was demonstrated.
At an applied potential of −50 mV, the following were determined: detection limit (S/N=3) of 6×10−6 M glucose, electrode sensitivity of 0.15 μA μM−1, and strict linearity up to concentration of 3×10−4 M.
American Psychological Association (APA)
Horozova, Elena& Dodevska, Totka& Dimcheva, Nina& Mussarlieva, Ruska. 2011. Electrocatalytic Reduction of Hydrogen Peroxide on Palladium-Gold Codeposits on Glassy Carbon : Applications to the Design of Interference-Free Glucose Biosensor. International Journal of Electrochemistry،Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-491471
Modern Language Association (MLA)
Horozova, Elena…[et al.]. Electrocatalytic Reduction of Hydrogen Peroxide on Palladium-Gold Codeposits on Glassy Carbon : Applications to the Design of Interference-Free Glucose Biosensor. International Journal of Electrochemistry No. 2011 (2011), pp.1-8.
https://search.emarefa.net/detail/BIM-491471
American Medical Association (AMA)
Horozova, Elena& Dodevska, Totka& Dimcheva, Nina& Mussarlieva, Ruska. Electrocatalytic Reduction of Hydrogen Peroxide on Palladium-Gold Codeposits on Glassy Carbon : Applications to the Design of Interference-Free Glucose Biosensor. International Journal of Electrochemistry. 2011. Vol. 2011, no. 2011, pp.1-8.
https://search.emarefa.net/detail/BIM-491471
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-491471