This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1016/j.electacta.2005.02.093 in citations.
Nitrate reduction on single-crystal platinum electrodes
Nitrate reduction on single-crystal platinum electrodes
The structure sensitivity of the reduction of nitrate has been studied on a series of single-crystal platinum electrodes by cyclic voltammmetry and in situ FTIRAS in sulfuric and perchloric acid solutions. The nitrate reduction is a structure-sensitive reaction on single-crystal platinum electrodes....
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Personal Name(s): | Dima, G. E. |
---|---|
Beltramo, G. L. / Koper, M. T. M. | |
Contributing Institute: |
Biologische Schichten; ISG-4 |
Published in: | Electrochimica acta, 50 (2005) S. 4318 - 4326 |
Imprint: |
New York, NY [u.a.]
Elsevier
2005
|
Physical Description: |
4318 - 4326 |
DOI: |
10.1016/j.electacta.2005.02.093 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Electrochimica Acta
50 |
Subject (ZB): | |
Publikationsportal JuSER |
The structure sensitivity of the reduction of nitrate has been studied on a series of single-crystal platinum electrodes by cyclic voltammmetry and in situ FTIRAS in sulfuric and perchloric acid solutions. The nitrate reduction is a structure-sensitive reaction on single-crystal platinum electrodes. However, this structure sensitivity is essentially controlled by other species (hydrogen, sulfate) that interact strongly with the electrode surface rather than by a structure-sensitive nitrate adsorption, dissociation or reduction.Voltammetric and spectroscopic data point to adsorbed nitric oxide (NO) as the main stable intermediate of the nitrate reduction to ammonia. No evidence for the formation of N2O was found. On surfaces with sufficiently wide (111) terraces in the absence of specifically adsorbed sulfate, an oxidizable nitrate reduction product is detected voltammetrically, which may tentatively be attributed to the formation of a small amount of hydroxylamine earlier during the voltammetric scan. (C) 2005 Elsevier Ltd. All rights reserved. |