Dioxygen reduction Æ Electrocatalytic reduction Æ Glassy carbon Æ Anthraquinone
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Dioxygen reduction Æ Electrocatalytic reduction Æ Glassy carbon Æ Anthraquinone
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| Creator |
Sheela, B.
Usha, S. Ramalechume, C. Yegnaraman, V. |
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| Subject |
Electrodics and Electrocatalysis
Electroorganic |
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| Description |
In this paper, the electrochemical current rectification
phenomenon exhibited at an electrochemical
interface constituted by a glassy carbon electrode covered
with a bilayer of polymer films is discussed. The
authors have shown that Methylene Blue (MB) redox
species can be confined to a very thin insulating polymer
film formed from orthophenylene diamine. The poly
(opd) film exhibited excellent blocking properties to redox
molecules in solution. On the other hand, the
insulating poly(opd) film trapped with MB could mediate
electron transfer between the redox molecules in
solution and the electrode. Further, a second polymeric
layer (Nafion film) trapped with ferrocene redox species
was formed as the outer layer over the inner poly (opd)
film containing MB. This bilayer-modified electrode, due
to the significant difference in the redox potentials of the
MB and ferrocene species immobilized in the inner and
outer layers, respectively, exhibits unidirectional current
flow and the results of the voltammetric investigations
on the modified electrodes are described in this communication.
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| Publisher |
Springer-Verlag
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| Date |
2005
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/127/1/067-2005.pdf
Sheela, B. and Usha, S. and Ramalechume, C. and Yegnaraman, V. (2005) Dioxygen reduction Æ Electrocatalytic reduction Æ Glassy carbon Æ Anthraquinone. Journal of Solid State Electrochemistry, 9 (9). pp. 595-600. |
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| Relation |
http://cecri.csircentral.net/127/
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