Electrochemical Impedance Spectroscopy of Redox Species for Ion-selective Membrane Characterization
Issued Date
2023-01-01
Resource Type
ISSN
09144935
DOI
Scopus ID
2-s2.0-85159129051
Journal Title
Sensors and Materials
Volume
35
Issue
4
Start Page
1425
End Page
1432
Rights Holder(s)
SCOPUS
Bibliographic Citation
Sensors and Materials Vol.35 No.4 (2023) , 1425-1432
Suggested Citation
Leasen S., Juagwon T. Electrochemical Impedance Spectroscopy of Redox Species for Ion-selective Membrane Characterization. Sensors and Materials Vol.35 No.4 (2023) , 1425-1432. 1432. doi:10.18494/SAM3674 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/82764
Title
Electrochemical Impedance Spectroscopy of Redox Species for Ion-selective Membrane Characterization
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
Ion-selective membranes are widely used as sensing materials in many diagnostic fields such as the pharmaceutical, environmental, and industrial fields. Ion-selective membranes are normally constructed from a neutral polymer such as polyvinyl chloride and allow ion transportation to occur through the crown structure of ionophores. To characterize the functionality of the membranes after prolonged exposure to solutions of various interfering ions, electrochemical impedance spectroscopy is utilized to investigate membrane performance, and the results are compared with those obtained from atomic force microscopy. In this study, the pore size of a membrane is quantified by using a pore size model and compared with the separation between adjacent corrugations in the profile line obtained from atomic force spectroscopy images by using image processing software.