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Open vessel microwave-assisted synthesis of Ag/ZnO hybrid fillers with antibacterial activity

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dc.title Open vessel microwave-assisted synthesis of Ag/ZnO hybrid fillers with antibacterial activity en
dc.contributor.author Machovský, Michal
dc.contributor.author Bažant, Pavel
dc.contributor.author Kožáková, Zuzana
dc.contributor.author Pastorek, Miroslav
dc.contributor.author Žlebek, Petr
dc.contributor.author Kuřitka, Ivo
dc.relation.ispartof NANOCON 2011
dc.identifier.isbn 978-80-87294-27-7
dc.date.issued 2011
dc.citation.spage 628
dc.citation.epage 634
dc.event.title 3rd International Conference on NANOCON
dc.event.location Brno
utb.event.state-en Czech Republic
utb.event.state-cs Česká republika
dc.event.sdate 2011-09-21
dc.event.edate 2011-09-23
dc.type conferenceObject
dc.language.iso en
dc.publisher TANGER Ltd. en
dc.subject microwave en
dc.subject hybrid ZnO/Ag en
dc.subject antibacterial en
dc.description.abstract A domestic microwave oven was adapted for development of a fast one-pot microwave assisted solvothermal synthesis with the aim of preparation of hybrid Ag/ZnO fillers for prospective medical application. Various hierarchical structures were synthesized in a very simple manner in low-temperature green process. Zinc acetate and silver nitrate were used as sources of Zn2+ and Ag+. Polyvinylpyrrolidone (PVP), glucose, hexamethylenetetramine (HMTA), and aqueous ammonia were used as various reduction and precipitation agents in water solution in this explorative study. The scanning electron microscopy (SEM) and X-ray diffraction (XRD) characterization reveal hexagonal structure of ZnO particles with the size up to 1 mu m combined with silver spheres with the diameter about 200 nm. In order to evaluate application potential of prepared materials zone diffusion test was used testing of their antibacterial activity. PVA films containing 5 wt.% of various Ag/ZnO hybrid fillers were prepared by solution casting method. Specimens 8 mm in diameter were tested against Gramm positive and Gram negative bacteria in a standard agar diffusion test. All samples exhibit strong antibacterial activity against Staphylococcus aureus as a representative strain of Gramm-positive bacteria, with a mean diameter between 14 and 23 mm of inhibition zone. On the other hand, no measurable extent of diffusion zone diameter was observed in test against Gramm-negative Escherichia coli. en
utb.faculty Faculty of Technology
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1002943
utb.identifier.rivid RIV/70883521:28110/11:43867038!RIV12-MSM-28110___
utb.identifier.rivid RIV/70883521:28610/11:43867038!RIV12-MSM-28610___
utb.identifier.obdid 43867275
utb.identifier.scopus 2-s2.0-84923698219
utb.identifier.wok 000306686700102
utb.source d-wok
dc.date.accessioned 2012-09-17T16:22:18Z
dc.date.available 2012-09-17T16:22:18Z
utb.ou Centre of Polymer Systems
utb.identifier.utb-sysno 63260
utb.contributor.internalauthor Machovský, Michal
utb.contributor.internalauthor Bažant, Pavel
utb.contributor.internalauthor Kožáková, Zuzana
utb.contributor.internalauthor Pastorek, Miroslav
utb.contributor.internalauthor Žlebek, Petr
utb.contributor.internalauthor Kuřitka, Ivo
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