Journal
VACUUM
Volume 143, Issue -, Pages 344-347Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.vacuum.2017.06.038
Keywords
Zeolite NaY; Ag-zeolite; Functionalization; Antibacterial activity; Interfaces
Funding
- Ministry of Higher Education Malaysia under Prototype Research Grant Scheme (PRGS) [4 L619]
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Silver (Ag)-based materials are widely used as effective antibacterial agents for a wide spectrum of bacteria. There is a great challenge to reduce the amount of Ag in Ag-based materials without limiting its antibacterial activity. Herein, the Ag-zeolite NaY (50% from its cation exchange capacity) was functionalized with 3-aminopropyltriethoxysilane to produce an amine functionalized, Ag-zeolite NaY. The results showed that the functionalization of Ag-zeolite NaY improved its antibacterial activity against a wide spectrum of bacteria (Escherichia coli ATCC11229 and Staphylococcus aureus ATCC6538), especially in solutions containing electrolyte (saline solution), although it has a lower surface area, pore volume and amount of Ag released compared to those of zeolite NaY and Ag-zeolite NaY. Thus, the functionalization of Ag-based materials is a promising approach to reducing the amount of Ag required in Ag-based material while improving its antibacterial activity. (C) 2017 Elsevier Ltd. All rights reserved.
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