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Nitrate and Nitrite Electrocatalytic Reduction at Layer-by-Layer Films Composed of Dawson-type Heteropolyanions Mono-substituted with Transitional Metal Ions and Silver Nanoparticles
Dundalk Institute Technology, Ireland.
Dundalk Institute Technology, Ireland.
University of Padua, Italy.
University of Limerick, Ireland.
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2015 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 184, 323-330 p.Article in journal (Refereed) PublishedText
Abstract [en]

A series of Dawson-type heteropolyanions (HPAs) mono-substituted with transitional metal ions ((alpha 2)- [P2W17O61FeIII](8-), (alpha 2)-[P2W17O61CuII](8-) and (alpha 2)-[P2W17O61NiII](8-)) have exhibited electrocatalytic properties towards nitrate and nitrite reduction in slightly acidic media (pH 4.5). The immobilization of these HPAs into water-processable films developed via layer-by layer assembly with polymer-stabilized silver nanoparticles led to the fabrication of the electrocatalytic interfaces for both nitrate and nitrite reduction. The LBL assembly as well as the changes in the HPA properties by immobilization has been characterized by electrochemical methods. The effects of the substituent ions, outer layers and the cationic moieties utilized for the films assembly of the developed film on the performances of nitrate electrocatalysis has been elucidated. (C) 2015 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2015. Vol. 184, 323-330 p.
Keyword [en]
Mono-substituted heteropolyanions; nitrate reduction; silver nanoparticles; electrocatalysis; layer-by-layer assembly
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-123760DOI: 10.1016/j.electacta.2015.10.082ISI: 000366016900041OAI: oai:DiVA.org:liu-123760DiVA: diva2:892972
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Funding Agencies|CeNano grant (Linkoping University)

Available from: 2016-01-11 Created: 2016-01-11 Last updated: 2016-10-20

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Vagin, Mikhail
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Physics and ElectronicsFaculty of Science & Engineering
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