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dc.creatorCiric-Marjanovic, Gordana
dc.creatorMentus, Slavko
dc.creatorPasti, Igor
dc.creatorGavrilov, Nemanja
dc.creatorKrstić, Jugoslav
dc.creatorTravas-Sejdic, Jadranka
dc.creatorStrover, Lisa T.
dc.creatorKopecka, Jitka
dc.creatorMoravkova, Zuzana
dc.creatorTrchova, Miroslava
dc.creatorStejskal, Jaroslav
dc.date.accessioned2019-01-30T17:42:55Z
dc.date.available2019-01-30T17:42:55Z
dc.date.issued2014
dc.identifier.issn1932-7447
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/1594
dc.description.abstractPolypyrrole nanotubes (PPy-NTs) were prepared by the oxidation of pyrrole with iron(III) chloride in the presence of a structure-guiding agent, methyl orange. Upon carbonization of the salt form of PPy-NTs, the conducting nitrogen-containing nanotubular carbonaceous material (C-PPy-NT) was obtained. The morphology, structure, and physicochemical properties of PPy-NTs in salt and base form as well as C-PPy-NTs were investigated by transmission electron microscopy, Fourier transform infrared and Raman spectroscopies, conductivity measurements, elemental microanalysis, inductively coupled plasma optical emission spectroscopy, X-ray photoelectron spectroscopy, and nitrogen physisorption. Results of the material characterization were linked to their electrochemical behavior. Specific capacitance of around 120 F g(-1) at low potential sweep rate of 5 mV s(-1) was observed for original PPy-NTs. However, when the potential sweep rate was increased to 100 mV s(-1), PPy-NT salt retained the value of specific capacitance, while the capacitance of PPy-NT base decreased by 70%. Upon carbonization of PPy-NT salt, the specific capacitance was doubled and capacitance fade measured in the interval 5-100 mV s(-1) was determined to be around 45%. It is proposed that the absolute value of specific capacitance is determined by specific surface area and surface functional groups, while the capacitance fade is determined by the conductivity of the electrode material. In this manner, a linear relationship between the percent of capacitance fade and the logarithm of the conductivity was revealed. C-PPy-NTs were also tested as an electrocatalyst for the oxygen reduction reaction (ORR) in alkaline media. High ORR activity was observed, characterized by the onset potential of -0.1 V versus saturated calomel electrode and the apparent number of electrons consumed per oxygen molecule higher than 3. Appreciable ORR activity can be linked with a high fraction of mesopores and the presence of surface functional groups, especially pyridinic and pyrrolic nitrogens, and also with a high degree of structural disorder.en
dc.publisherAmer Chemical Soc, Washington
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172043/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45014/RS//
dc.relationCzech Science Foundation - P205/12/0911
dc.relationCzech Science Foundation - 13-00270S
dc.relationCzech Science Foundation - 14-10279S
dc.rightsrestrictedAccess
dc.sourceJournal of Physical Chemistry C
dc.titleSynthesis, Characterization, and Electrochemistry of Nanotubular Polypyrrole and Polypyrrole-Derived Carbon Nanotubesen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractКопецка, Јитка; Трцхова, Мирослава; Ментус, Славко; Моравкова, Зузана; Гаврилов, Немања; Травас-Сејдиц, Јадранка; Стејскал, Јарослав; Цириц-Марјановиц, Гордана; Крстић, Југослав; Стровер, Лиса Т.; Пасти, Игор;
dc.citation.volume118
dc.citation.issue27
dc.citation.spage14770
dc.citation.epage14784
dc.citation.other118(27): 14770-14784
dc.citation.rankM21
dc.identifier.doi10.1021/jp502862d
dc.identifier.rcubConv_3179
dc.identifier.scopus2-s2.0-84904358980
dc.identifier.wos000338980400007
dc.type.versionpublishedVersion


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