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https://open.uns.ac.rs/handle/123456789/6082
Nаziv: | Electrochemical Impedance Spectroscopic Analysis of RuO2 Based Thick Film pH Sensors | Аutоri: | Manjakkal L. Đurđić, Elvira Cvejin K. Kulawik J. Zaraska K. Szwagierczak D. |
Dаtum izdаvаnjа: | 20-јун-2015 | Čаsоpis: | Electrochimica Acta | Sažetak: | © 2015 Elsevier B.V. All rights reserved. The conductimetric interdigitated thick film pH sensors based on RuO<inf>2</inf> were fabricated and their electrochemical reactions with solutions of different pH values were studied by electrochemical impedance spectroscopy (EIS) technique. The microstructural properties and composition of the sensitive films were examined by scanning electron microscopy, X-ray energy dispersive spectroscopy and Raman spectroscopy. The EIS analysis of the sensor was carried out in the frequency range 10 mHz-2 MHz for pH values of test solutions 2-12. The electrical parameters of the sensor were found to vary with changing pH. The conductance and capacitance of the film were distinctly dependent on pH in the low frequency range. The Nyquist and Bode plots derived from the impedance data for the metal oxide thick film pH sensor provided information about the underlying electrochemical reactions. | URI: | https://open.uns.ac.rs/handle/123456789/6082 | ISSN: | 00134686 | DOI: | 10.1016/j.electacta.2015.04.048 |
Nаlаzi sе u kоlеkciјаmа: | PMF Publikacije/Publications |
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