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STUDY OF NANOPOROUS ALUMINA MEMBRANES BY ELECTROCHEMICAL METHOD

1,2 KYNCLOVÁ Hana
Co-authors:
3 SMILEK Jiří 1,2 PRÁŠEK Jan 3 KLUČÁKOVÁ Martina 3 SEDLÁČEK Petr 1,2 HUBÁLEK Jaromír
Institutions:
1 Department of Microelectronic, Faculty of Electrical Engineering and Communications, Brno University of Technology, Brno, Czech Republic, EU
2 Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, EU, hana.kynclova@ceitec.vutbr.cz
3 Faculty of Chemistry, Brno University of technology, Materials Research Centre, Brno, Czech Republic, EU
Conference:
7th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 14th - 16th 2015
Proceedings:
Proceedings 7th International Conference on Nanomaterials - Research & Application
Pages:
354-359
ISBN:
978-80-87294-59-8
ISSN:
2694-930X
Published:
11th January 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
545 views / 205 downloads
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Abstract

Nanoporous alumina is useful material for development of electrochemical sensors including filtration, molecule sorting and subsequent detection. Big advantage of alumina is possibility to reliably control size of nanopores and membrane thickness. For sensorial utilization, it is necessary to know diffusion properties of membranes and their permeability of various substances. Therefore, membranes with different pore diameter and thickness were prepared by two step anodization and modified by deposition of gold layers which serve as electrodes. Thereafter, their influence on changes of electrochemical impedance spectra was studied and compared in dependency on membrane morphology.

Keywords: Nanoporous membrane, anodization, alumina, gold layer, diffusion, electrochemical impedance spectroscopy

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