Antimicrobial activity of transition metal acid MoO3 prevents microbial growth on material surfaces |
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Authors: | Cordt Zollfrank Kai GutbrodPeter Wechsler Josef Peter Guggenbichler |
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Affiliation: | a University of Erlangen-Nuremberg, Department of Materials Science and Engineering 3-Glass and Ceramics, Martensstr. 5, D-91058 Erlangen, Germanyb LEONI Kabel GmbH, Stieberstraße 5, D-91154 Roth, Germanyc Laboratory for the Development of Healthcare Products, Leitweg 23, A-6345 Kössen, Austria |
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Abstract: | Serious infectious complications of patients in healthcare settings are often transmitted by materials and devices colonised by microorganisms (nosocomial infections). Current strategies to generate material surfaces with an antimicrobial activity suffer from the consumption of the antimicrobial agent and emerging multidrug-resistant pathogens amongst others. Consequently, materials surfaces exhibiting a permanent antimicrobial activity without the risk of generating resistant microorganisms are desirable. This publication reports on the extraordinary efficient antimicrobial properties of transition metal acids such as molybdic acid (H2MoO4), which is based on molybdenum trioxide (MoO3). The modification of various materials (e.g. polymers, metals) with MoO3 particles or sol-gel derived coatings showed that the modified materials surfaces were practically free of microorganisms six hours after contamination with infectious agents. The antimicrobial activity is based on the formation of an acidic surface deteriorating cell growth and proliferation. The application of transition metal acids as antimicrobial surface agents is an innovative approach to prevent the dissemination of microorganisms in healthcare units and public environments. |
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Keywords: | Antimicrobial materials Transition metal acid Molybdenum oxide Antibacterial coating Sol-gel technique |
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