Oxygen reduction by decamethylferrocene at liquid/liquid interfaces catalyzed by dodecylaniline

Molecular oxygen (O2) reduction by decamethylferrocene (DMFc) was investigated at a polarized water/ 1,2-dichloroethane (DCE) interface. Electrochemical results point to a mechanism similar to the EC type reaction at the conventional electrode/solution interface, in which an assisted proton transfer (APT) by DMFc across the water/DCE interface via the formation of DMFcH+ corresponds to the electrochemical step and O2 reduction to hydrogen peroxide (H2O2) represents the chemical step. The proton transfer step can also be driven using lipophilic bases such as 4-dodecylaniline. Finally, voltammetric data shows that lipophilic DMFc can also be extracted to the aqueous acidic phase to react homogeneously with oxygen.


Published in:
Journal of Electroanalytical Chemistry, 639, 102–108
Year:
2010
Publisher:
Elsevier
ISSN:
0022-0728
Keywords:
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 Record created 2010-05-17, last modified 2018-09-13

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