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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 Scopus Sources, 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 | https://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; [email protected] (J.K.); [email protected] (M.V.) 2 Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Zlin CZ–760 01, Czech Republic; [email protected] (M.M.); [email protected] (R.O.) 3 Faculty of Mathematics and Physics, Charles University in Prague, Prague 8 CZ–180 00, Czech Republic; [email protected] 4 Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague 6 CZ–162 06, Czech Republic; [email protected] (P.B.); [email protected] (Z.M.); [email protected] (M.T.); [email protected] (J.S.) * Correspondence: [email protected]; 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). |