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Statements

Subject Item
n2:RIV%2F68081707%3A_____%2F14%3A00431759%21RIV15-GA0-68081707
rdf:type
n8:Vysledek skos:Concept
dcterms: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.
dcterms:title
Chitosan catalyzes hydrogen evolution at mercury electrodes Chitosan catalyzes hydrogen evolution at mercury electrodes
skos:prefLabel
Chitosan catalyzes hydrogen evolution at mercury electrodes Chitosan catalyzes hydrogen evolution at mercury electrodes
skos:notation
RIV/68081707:_____/14:00431759!RIV15-GA0-68081707
n3:aktivita
n14:I n14:P
n3:aktivity
I, P(GAP301/11/2055)
n3:cisloPeriodika
JUL2014
n3:dodaniDat
n10:2015
n3:domaciTvurceVysledku
n6:5312833 n6:9991646
n3:druhVysledku
n11:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
7168
n3:idVysledku
RIV/68081707:_____/14:00431759
n3:jazykVysledku
n12:eng
n3:klicovaSlova
Chitosan; Glucosamine-containing polymers; Catalytic hydrogen evolution
n3:klicoveSlovo
n7:Glucosamine-containing%20polymers n7:Chitosan n7:Catalytic%20hydrogen%20evolution
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[0CCF570A827D]
n3:nazevZdroje
Electrochemistry Communications
n3:obor
n9:BO
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n13:GAP301%2F11%2F2055
n3:rokUplatneniVysledku
n10:2014
n3:svazekPeriodika
44
n3:tvurceVysledku
Římánková, Ludmila Paleček, Emil
n3:wos
000337997400016
s:issn
1388-2481
s:numberOfPages
4
n4:doi
10.1016/j.elecom.2014.04.015