SPECIFIC PERMEABILITY OF NANOPOROUS ALUMINA MEMBRANES STUDIED BY DIFFUSION CELL TECHNIQUE

1 SMILEK Jiří
Co-authors:
2,3 KYNCLOVÁ Hana 1 SEDLÁČEK Petr 2,3 PRÁŠEK Jan 1 KLUČÁKOVÁ Martina
Institutions:
1 Brno University of Technology, Faculty of Chemistry, Materials Research Centre, Purkyňova 118/464, 612 00 Brno, Czech Republic, EU
2 Brno University of Technology, Central European Institute of Technology, Smart Nanodevices, Technická 3058/10, 616 00 Brno, Czech Republic, EU
3 Brno University of Technology, Faculty of Electrical Engineering and Communication, Technická 3058/10, 616 00 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:
348-353
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:
23 views / 2 downloads
Abstract

The permeability and barrier properties of various solutes were studied through nanoporous alumina membranes by diffusion cell technique. Fabricated membranes were characterized by basic physic-chemical methods. The accurate thickness and roughness was determined by profilometry, the distribution of pores and pore size was detected by mercury intrusion porosimetry, textural properties were studied by scanning electron microscopy and specific surface area by BET analysis. The specific permeability was compared by determination of fundamental diffusion parameters such as diffusion flux and break-through time (lag time).Results show, that the penetration ability and other important parameters such as thickness and the distribution of pores are strongly dependent on experimental setup within preparation of nanoporous alumina membranes. The most important parameters which influenced the final properties of membranes are time of anodization, type of electrolyte, applied voltage and current density.

Keywords: Nanoporous alumina membrane; diffusion; permeability; potassium chloride; preparation of nanoporous membranes
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