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Partially Hydrogenated Graphene Materials Exhibit High Electrocatalytic Activities Related to Unintentional Doping with Metallic Impurities
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SYSNO ASEP 0463514 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Partially Hydrogenated Graphene Materials Exhibit High Electrocatalytic Activities Related to Unintentional Doping with Metallic Impurities Author(s) Jankovský, O. (CZ)
Libánská, A. (CZ)
Bouša, D. (CZ)
Sedmidubský, D. (CZ)
Matějková, Stanislava (UOCHB-X) RID, ORCID
Sofer, Z. (CZ)Source Title Chemistry - A European Journal. - : Wiley - ISSN 0947-6539
Roč. 22, č. 25 (2016), s. 8627-8634Number of pages 8 s. Language eng - English Country DE - Germany Keywords electrocatalysis ; electrochemistry ; graphene ; hydrogenation ; sensing Subject RIV CA - Inorganic Chemistry R&D Projects GA15-09001S GA ČR - Czech Science Foundation (CSF) Institutional support UOCHB-X - RVO:61388963 UT WOS 000380270100030 EID SCOPUS 84971333672 DOI 10.1002/chem.201600811 Annotation Partially hydrogenated graphene materials, synthesized by the chemical reduction/ hydrogenation of two different graphene oxides using zinc powder in acidic environment or aluminum powder in alkaline environment, exhibit high electrocatalytic activities, as well as electrochemical sensing properties. The starting graphene oxides and the resultant hydrogenated graphenes were characterized in detail. Their electrocatalytic activity was examined in the oxygen reduction reaction, whereas sensing properties towards explosives were tested by using picric acid as a redox probe. Findings indicate that the high electrocatalytic performance originates not only from the hydrogenation of graphene, but also from unintentional contamination of graphene with manganese and other metals during synthesis. A careful evaluation of the obtained data and a detailed chemical analysis are necessary to identify the origin of this anomalous electrocatalytic activity. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Year of Publishing 2017
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