About: Chitosan catalyzes hydrogen evolution at mercury electrodes

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In recent decades chitosan has attracted great attention as biodegradable biomaterial with interesting properties, making chitosan useful in biomedicine and various fields of practical life. Chitosan was generally considered as an electrochemically inactive polysaccharide. Here we show that chitosan (containing glucosamine residues) produced voltammetric and chronopotentiometric reduction peaks at mercury and solid amalgam electrodes in a wide pH range. These peaks strongly increased with the buffer concentration and with decreasing pH and were assigned to the catalytic hydrogen evolution reaction. Under the same conditions chitin oligomers (containing N-acetylated glucosamines) displayed no significant electroactivity. Polyanionic polymers, such as DNA and hyaluronic acid, formed multilayers with the adsorbed chitosan. (C) 2014 Elsevier B.V. All rights reserved. In recent decades chitosan has attracted great attention as biodegradable biomaterial with interesting properties, making chitosan useful in biomedicine and various fields of practical life. Chitosan was generally considered as an electrochemically inactive polysaccharide. Here we show that chitosan (containing glucosamine residues) produced voltammetric and chronopotentiometric reduction peaks at mercury and solid amalgam electrodes in a wide pH range. These peaks strongly increased with the buffer concentration and with decreasing pH and were assigned to the catalytic hydrogen evolution reaction. Under the same conditions chitin oligomers (containing N-acetylated glucosamines) displayed no significant electroactivity. Polyanionic polymers, such as DNA and hyaluronic acid, formed multilayers with the adsorbed chitosan. (C) 2014 Elsevier B.V. All rights reserved. (en)
Title	Chitosan catalyzes hydrogen evolution at mercury electrodes Chitosan catalyzes hydrogen evolution at mercury electrodes (en)
skos:prefLabel	Chitosan catalyzes hydrogen evolution at mercury electrodes Chitosan catalyzes hydrogen evolution at mercury electrodes (en)
skos:notation	RIV/68081707:_____/14:00431759!RIV15-GA0-68081707
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP301/11/2055)
http://linked.open...iv/cisloPeriodika	JUL2014
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Římánková, Ludmila Paleček, Emil
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Biofyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	7168
http://linked.open...ai/riv/idVysledku	RIV/68081707:_____/14:00431759
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Chitosan; Glucosamine-containing polymers; Catalytic hydrogen evolution (en)
http://linked.open.../riv/klicoveSlovo	Catalytic hydrogen evolution Glucosamine-containing polymers Chitosan
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[0CCF570A827D]
http://linked.open...i/riv/nazevZdroje	Electrochemistry Communications
http://linked.open...in/vavai/riv/obor	BO
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	New methods of analysis of proteins and their glycosylation in cancer - combination of electrochemistry, microfludic biosensors and mass spectrometry.
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	44
http://linked.open...iv/tvurceVysledku	Paleček, Emil Římánková, Ludmila
http://linked.open...ain/vavai/riv/wos	000337997400016
issn	1388-2481
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.elecom.2014.04.015

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