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Synthesis of silver-zeolite films on micropatterned porous alumina and its application as an antimicrobial substrate.

Authors
Sabbani-S; Gallego-Perez-D; Nagy-A; Waldman-WJ; Hansford-D; Dutta-PK
Source
Microporous Mesoporous Mater 2010 Nov; 135(1-3):131-136
NIOSHTIC No.
20041642
Abstract
In this study, we focus on synthesis of patterned-zeolite films and the potential application of a silver-derived form of this film as a biocidal agent. The synthetic strategy has been to develop a patterned porous alumina substrate using soft lithographic methods. These patterns have dimensions in the range of 5-100 . Previously patterned PDMS and PMMA molds were used to define surface microfeatures on the alumina supports. Zeolite films (2-3 ) were then grown on the alumina using a seeding process followed by secondary growth. Electron microscopy showed that the zeolite film followed the pattern of the alumina substrate. Silver nanoparticles were grown on the surface of the zeolite film by reduction of the Ag+ - exchanged zeolite with aqueous hydrazine. The antimicrobial properties of the patterned-zeolite films were successfully demonstrated using Escherichia coli bacteria as the model system, complete bacteria eradication was noted within 120 min. Such patterned-zeolite films can be incorporated into a variety of systems, including fabrics, biomaterials, filters and thus can serve a wide range of uses.
Keywords
Biocides; Molds; Microscopic-analysis; Nanotechnology; Aqueous-solutions; Bacteria; Bacterial-cultures; Author Keywords: Patterned membranes; Soft lithography; Micropatterning; Alumina membrane; Antibacterial
Contact
Prabir K. Dutta, Department of Chemistry, The Ohio State University, Columbus, OH 43210
CODEN
MIMMFJ
Publication Date
20101101
Document Type
Journal Article
Email Address
dutta.1@osu.edu
Funding Type
Grant
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-009141
Issue of Publication
1-3
ISSN
1387-1811
Source Name
Microporous and Mesoporous Materials
State
OH
Performing Organization
Ohio State University
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