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Polymer lead pencil graphite as electrode material: Voltammetric, XPS and Raman study

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dc.title Polymer lead pencil graphite as electrode material: Voltammetric, XPS and Raman study en
dc.contributor.author Navrátil, Rudolf
dc.contributor.author Kotzianová, Adéla
dc.contributor.author Halouzka, Vladimír
dc.contributor.author Opletal, Tomáš
dc.contributor.author Třísková, Iveta
dc.contributor.author Trnková, Libuše
dc.contributor.author Hrbáč, Jan
dc.relation.ispartof Journal of Electroanalytical Chemistry
dc.identifier.issn 1572-6657 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2016
utb.relation.volume 783
dc.citation.spage 152
dc.citation.epage 160
dc.type article
dc.language.iso en
dc.publisher Elsevier BV
dc.identifier.doi 10.1016/j.jelechem.2016.11.030
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S1572665716306348
dc.subject Diamond-like carbon en
dc.subject Pencil graphite electrode en
dc.subject Polymer pencil lead en
dc.subject Silicon monoxide en
dc.subject Voltammetry en
dc.description.abstract Mechanical pencil leads were studied as disposable, low-cost electrodes. Lateral surfaces of mechanical pencil leads branded as “polymer” show high electron transfer rates for hexaamineruthenium chloride, potassium ferricyanide, ascorbate, ferric chloride and dopamine electrochemical probes, and are significantly better electrode materials than either classic woodcase clay–graphite pencil compositions or non-polymer mechanical pencil leads. Best polymer leads outperform glassy carbon, basal and edge graphite and boron-doped diamond electrodes. In addition to electrochemical experiments, the studied pencil leads were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy and Raman spectroscopy. High content of sp3 hybridized carbon (up to 80%) with a low degree of surface oxidation and occurrence of silicon monoxide (SiO) on the surfaces of the polymer pencil leads were found using X-ray photoelectron spectroscopy. Low double layer capacitance values of similar magnitude as that found for boron-doped diamond electrodes are at the origin of favourably low background currents on the polymer pencil lead electrodes. SiO containing polymer pencil lead electrodes allow electrochemical analysis that is more sensitive than common carbon electrodes, as demonstrated by voltammetry of adenine and xanthine. © 2016 Elsevier B.V. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1006805
utb.identifier.obdid 43876057
utb.identifier.scopus 2-s2.0-85002542108
utb.identifier.wok 000390627500021
utb.identifier.coden JECHE
utb.source j-scopus
dc.date.accessioned 2017-02-28T15:11:28Z
dc.date.available 2017-02-28T15:11:28Z
utb.contributor.internalauthor Halouzka, Vladimír
utb.fulltext.affiliation Rudolf Navratil a , Adela Kotzianova a , Vladimir Halouzka b , Tomas Opletal c , Iveta Triskova a , Libuse Trnkova a, ⁎ , Jan Hrbac a, ⁎ a Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic b Department of Physics and Materials Engineering, Faculty of Technology, Tomas Bata University in Zlin, nam. T.G. Masaryka 275, 760 01 Zlin, Czech Republic c Department of Analytical Chemistry, Faculty of Science, Palacky University, tr. 17. listopadu 12, 771 46 Olomouc, Czech Republic * Corresponding authors. E-mail addresses: libuse@chemi.muni.cz (L. Trnkova), jhrbac@atlas.cz (J. Hrbac).
utb.fulltext.dates Received 10 October 2016 Received in revised form 13 November 2016 Accepted 14 November 2016 Available online 16 November 2016
utb.fulltext.sponsorship This research was supported by MUNI/A/1500/2015, LH 13053 KONTAKT II and COST LD15058 projects of the Ministry of Education, Youth, and Sports of the Czech Republic (MEYS CR). The authors wish to thank Dr. Jan. Vacek for critically reading the manuscript and BVT Technologies Company for the prototypes of hybrid screen-printed pencil graphite electrodes.
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