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@inproceedings{1353495,
author = {Trnková, Libuše and Hrbáč, Jan and Navrátil, Rudolf and Kotzianová, Adéla and Opletal, Tomáš and Halouzka, Vladimír},
address = {Hague},
booktitle = {67th Annual Meeting of the International Society of Electrochemistry},
edition = {1},
keywords = {polymer pencil graphite; electrochemical sensor; pencil leads; Raman spectroscopy; XPS; EDX; SEM; silicon monooxide},
howpublished = {elektronická verze "online"},
language = {eng},
location = {Hague},
note = {Nepřenášet do RIV - není na WoS ani Scopus, neodpovídá definici druhů výsledků dle M17+},
title = {Polymer Pencil Graphite as Electrode Material for Sensing},
year = {2016}
}
TY - JOUR
ID - 1353495
AU - Trnková, Libuše - Hrbáč, Jan - Navrátil, Rudolf - Kotzianová, Adéla - Opletal, Tomáš - Halouzka, Vladimír
PY - 2016
TI - Polymer Pencil Graphite as Electrode Material for Sensing
CY - Hague
N1 - Nepřenášet do RIV - není na WoS ani Scopus, neodpovídá definici druhů výsledků dle M17+
KW - polymer pencil graphite
KW - electrochemical sensor
KW - pencil leads
KW - Raman spectroscopy
KW - XPS
KW - EDX
KW - SEM
KW - silicon monooxide
N2 - 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.
ER -
TRNKOVÁ, Libuše, Jan HRBÁČ, Rudolf NAVRÁTIL, Adéla KOTZIANOVÁ, Tomáš OPLETAL a Vladimír HALOUZKA. Polymer Pencil Graphite as Electrode Material for Sensing. Online. In \textit{67th Annual Meeting of the International Society of Electrochemistry}. 1. vyd. Hague, 2016, 1 s.
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