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Cobalt pyridinoporphyrazine film as a platinum group metal-free mediator in hydrogen electrochemistry
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SYSNO ASEP 0508539 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Cobalt pyridinoporphyrazine film as a platinum group metal-free mediator in hydrogen electrochemistry Author(s) Klusáčková, Monika (UFCH-W) RID, ORCID
Tarábková, Hana (UFCH-W) RID, ORCID
Janda, Pavel (UFCH-W) RID, ORCIDSource Title Monatshefte fur Chemie. - : Springer - ISSN 0026-9247
Roč. 150, č. 9 (2019), s. 1643-1650Number of pages 8 s. Language eng - English Country AT - Austria Keywords bovine serum-albumin ; evolution reaction ; oxidation ; electrode ; phthalocyanine ; adsorption ; reduction ; behavior ; nanoparticles ; nanobubbles ; Electrocatalysis Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) Method of publishing Limited access Institutional support UFCH-W - RVO:61388955 UT WOS 000482907600013 EID SCOPUS 85070187530 DOI 10.1007/s00706-019-02452-0 Annotation The cobalt pyridinoporphyrazine film deposited on basal plane highly oriented pyrolytic graphite (HOPG) and Au(111) electrodes exhibited electrocatalytic activity to hydrogen oxidation reaction compared to the bare electrode surfaces. The deposition performed by spontaneous adsorption of the cobalt pyridinoporphyrazine complex from its aqueous solution led on basal plane HOPG to the formation of a uniform homogeneous film with simultaneous reduction of cobalt centre, while at Au(111) electrode preferential aggregation of pyridinoporphyrazine complex took place without any change of reduction state of cobalt. Accordingly, both substrates affected the pathway of electrocatalytic hydrogen oxidation. Potentiometric detection of hydrogen based on equilibrium potential of pyridinoporphyrazine Co(II)/Co(I) electrode upon alternation presence of hydrogen and argon in solution was examined. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0299411
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