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Electrochemical Detection of Structurally Different Aminoacids by Thin Layers of Undoped and Doped ZnO.
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SYSNO ASEP 0467434 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Electrochemical Detection of Structurally Different Aminoacids by Thin Layers of Undoped and Doped ZnO. Author(s) Dytrych, Pavel (UCHP-M) RID, ORCID, SAI
Klusoň, Petr (UCHP-M) RID, ORCID, SAI
Stanovský, Petr (UCHP-M) RID, ORCID, SAI
Šolcová, Olga (UCHP-M) RID, ORCID, SAISource Title Journal of Multidisciplinary Engineering Science and Technology - ISSN 2458-9403
Roč. 3, č. 10 (2016), s. 5706-5712Number of pages 7 s. Language eng - English Country DE - Germany Keywords doped semiconductors ; aminoacids ; open circuit amperometry Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA15-14228S GA ČR - Czech Science Foundation (CSF) GA15-04790S GA ČR - Czech Science Foundation (CSF) Institutional support UCHP-M - RVO:67985858 Annotation Thin layers of undoped and doped ZnO were prepared by a sol-gel method using the dip-coating technique. The doped layers contained 10 mol. % of Li or 10 mol. % of Na. The films were yielded with thicknesses ranging from 140 nm to 160 nm. The layers were analyzed by SEM, EDX, XRD, Raman spectroscopy, and by electrochemical tests (amperometry, linear voltammetry, and open circuit potential). All prepared samples were smooth and transparent. A series of electrochemical measurement was performed with both doped and undoped layers with aminoacids solutions of electrolyte. The glycine, glutamic acid, histidine, and methionine were chosen. Glycine possesses alkane chain, glutamic acid the second carboxylic group, histidine the alkalic amino group, and methionine the sulphur containing group. It was shown, that the change in polarity of ZnO induced by doping with 10 mol. %. Na and 10 mol. %. Li played an important role in surface interaction of ZnO and aminoacid dissolved in the electrolyte and permitted the qualitative and semi-quantitative distinguishing of the four structurally different aminoacids.
Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2017
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