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Polypyrrole nanotubes and their carbonized analogs: Synthesis, characterization, gas sensing properties

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dc.title Polypyrrole nanotubes and their carbonized analogs: Synthesis, characterization, gas sensing properties en
dc.contributor.author Kopecká, Jitka
dc.contributor.author Mrlík, Miroslav
dc.contributor.author Olejník, Robert
dc.contributor.author Kopecký, Dušan
dc.contributor.author Vrňata, Martin
dc.contributor.author Prokeš, Ján
dc.contributor.author Bober, Patrycja
dc.contributor.author Morávková, Zuzana
dc.contributor.author Trchová, Miroslava
dc.contributor.author Stejskal, Jaroslav
dc.relation.ispartof Sensors (Switzerland)
dc.identifier.issn 1424-8220 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2016
utb.relation.volume 16
utb.relation.issue 11
dc.type article
dc.language.iso en
dc.publisher Molecular Diversity Preservation International (MDPI)
dc.identifier.doi 10.3390/s16111917
dc.relation.uri http://www.mdpi.com/1424-8220/16/11/1917
dc.subject polypyrrole nanotube en
dc.subject carbon nanotube en
dc.subject carbonization en
dc.subject functionalized nanotube en
dc.subject heptane detection en
dc.description.abstract Polypyrrole (PPy) in globular form and as nanotubes were prepared by the oxidation of pyrrole with iron(III) chloride in the absence and presence of methyl orange, respectively. They were subsequently converted to nitrogen-containing carbons at 650 °C in an inert atmosphere. The course of carbonization was followed by thermogravimetric analysis and the accompanying changes in molecular structure by Fourier Transform Infrared and Raman spectroscopies. Both the original and carbonized materials have been tested in sensing of polar and non-polar organic vapors. The resistivity of sensing element using globular PPy was too high and only nanotubular PPy could be used. The sensitivity of the PPy nanotubes to ethanol vapors was nearly on the same level as that of their carbonized analogs (i.e., ~18% and 24%, respectively). Surprisingly, there was a high sensitivity of PPy nanotubes to the n-heptane vapors (~110%), while that of their carbonized analog remained at ~20%. The recovery process was significantly faster for carbonized PPy nanotubes (in order of seconds) compared with 10 s of seconds for original nanotubes, respectively, due to higher specific surface area after carbonization. © 2016 by the authors; licensee MDPI, Basel, Switzerland. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1006808
utb.identifier.obdid 43876055
utb.identifier.scopus 2-s2.0-84995755381
utb.identifier.wok 000389641700150
utb.source j-scopus
dc.date.accessioned 2017-02-28T15:11:28Z
dc.date.available 2017-02-28T15:11:28Z
dc.rights Attribution 4.0 International
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.rights.access openAccess
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Mrlík, Miroslav
utb.contributor.internalauthor Olejník, Robert
utb.fulltext.affiliation Jitka Kopecká 1 , Miroslav Mrlík 2 , Robert Olejník 2 , Dušan Kopecký 1, *, Martin Vrňata 1, Jan Prokeš 3, Patrycja Bober 4, Zuzana Morávková 4, Miroslava Trchová 4 and Jaroslav Stejskal 4 1 Department of Physics and Measurements, University of Chemistry and Technology Prague, Prague 6 CZ–166 28, Czech Republic; Jitka.Kopecka@vscht.cz (J.K.); martin.vrnata@vscht.cz (M.V.) 2 Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Zlin CZ–760 01, Czech Republic; mrlik@ft.utb.cz (M.M.); olejnik@ft.utb.cz (R.O.) 3 Faculty of Mathematics and Physics, Charles University in Prague, Prague 8 CZ–180 00, Czech Republic; jprokes@semi.mff.cuni.cz 4 Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague 6 CZ–162 06, Czech Republic; bober@imc.cas.cz (P.B.); moravkova@imc.cas.cz (Z.M.); trchova@imc.cas.cz (M.T.); stejskal@imc.cas.cz (J.S.) * Correspondence: kopeckyd@vscht.cz; Tel.: +420-220-443-351
utb.fulltext.dates Received: 5 September 2016; Accepted: 8 November 2016; Published: 15 November 2016
utb.fulltext.sponsorship This work was supported by the Czech Science Foundation (14-10279S, 16-02787S). This research was also sponsored by NATO Public Diplomacy Division in the framework of “Science for Peace” (984597).
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Attribution 4.0 International Except where otherwise noted, this item's license is described as Attribution 4.0 International