Characterisation by electrochemical impedance spectroscopy of a pet membrane electrode based on zeolithe

Characterisation by electrochemical impedance spectroscopy of a pet membrane electrode based on... A polyethylene terephthalate membrane electrode based on clinoptilolite as the ionophore was prepared and was deposited on a gold electrode. This one was characterised with electrochemical impedance spectroscopy and modelled with an equivalent electric circuit. The detection of ammonium at low concentrations and the interaction with the other cations were made by impedance measurements. The study of the interaction of ammonium ions in presence with the cations such as Na+, Ca2+ and K+ in the same concentration showed that the electrode is selective and sensitive for very low concentrations 10−7 mol/l, but the membrane is saturated for concentrations greater than 10−2 M. The life expectancy of the membrane exceeded 50 days when we changed the PBS solution after 44 days. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Characterisation by electrochemical impedance spectroscopy of a pet membrane electrode based on zeolithe

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Publisher
Springer Netherlands
Copyright
Copyright © 2013 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-013-1430-7
Publisher site
See Article on Publisher Site

Abstract

A polyethylene terephthalate membrane electrode based on clinoptilolite as the ionophore was prepared and was deposited on a gold electrode. This one was characterised with electrochemical impedance spectroscopy and modelled with an equivalent electric circuit. The detection of ammonium at low concentrations and the interaction with the other cations were made by impedance measurements. The study of the interaction of ammonium ions in presence with the cations such as Na+, Ca2+ and K+ in the same concentration showed that the electrode is selective and sensitive for very low concentrations 10−7 mol/l, but the membrane is saturated for concentrations greater than 10−2 M. The life expectancy of the membrane exceeded 50 days when we changed the PBS solution after 44 days.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Oct 16, 2013

References

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