2016
Polymer Pencil Graphite as Electrode Material for Sensing
TRNKOVÁ, Libuše, Jan HRBÁČ, Rudolf NAVRÁTIL, Adéla KOTZIANOVÁ, Tomáš OPLETAL et. al.Základní údaje
Originální název
Polymer Pencil Graphite as Electrode Material for Sensing
Autoři
TRNKOVÁ, Libuše, Jan HRBÁČ, Rudolf NAVRÁTIL, Adéla KOTZIANOVÁ, Tomáš OPLETAL a Vladimír HALOUZKA
Vydání
1. vyd. Hague, 67th Annual Meeting of the International Society of Electrochemistry, 1 s. 2016
Další údaje
Jazyk
angličtina
Typ výsledku
Stať ve sborníku
Obor
10403 Physical chemistry
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Forma vydání
elektronická verze "online"
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova česky
polymerní tužkový grafit; elektrochemický sensor; pentelková tuha; Ramanova spektroskopie; XPS; EDX; SEM; oxid křemnatý
Klíčová slova anglicky
polymer pencil graphite; electrochemical sensor; pencil leads; Raman spectroscopy; XPS; EDX; SEM; silicon monooxide
Štítky
Změněno: 17. 5. 2018 14:39, Ing. Nicole Zrilić
Anotace
V originále
Electrode materials are the key components of electrochemical sensors and due to diverse structural and morphological forms, carbon material is favored [1-3]. Undoubtedly, pencil leads belong to this category as they represent carbon-based material which is easily available at a very low cost. The aim of this investigation was to study pencil leads branded as “polymer” and to compare them with older types of pencil leads not marketed as “polymer”. Our observations indicate that polymer pencil graphite electrodes (PPeGE) show excellent electron transfer rates for common electrochemical standards and yield the significant improvement in current sensitivity in comparison with conventional graphite electrodes. In addition to electrochemical experiments, the pencil leads were characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy. Good electron transfer properties observed for the best pencil leads are attributed to a unique composition of their surfaces, containing carbon with a low degree of oxidation and silicon monoxide (SiO). The high proportion of carbon (up to 80%) is sp3 hybridized. Advantages of PPeGE material in sensing are demonstrated on the surface quality sensitive assay - stripping analysis of purine derivatives in the absence and presence of Cu(II) ions [4, 5]. Best oxidation signals of both Cu(I)-purine complex and corresponding purine were obtained by using HB grade Tombow and Koh-i-Noor polymer leads.
Návaznosti
LD15058, projekt VaV |
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LH13053, projekt VaV |
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MUNI/A/1500/2015, interní kód MU |
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