Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/13517
DC FieldValueLanguage
dc.contributor.authorTheofilou, Stathis P.-
dc.contributor.authorConstantinou, Barbara K.-
dc.contributor.authorChatziiona, Vasiliki K.-
dc.contributor.authorPantelidou, Nantia-
dc.contributor.authorPlyastsov, Semyon-
dc.contributor.authorKapnisis, Konstantinos-
dc.contributor.authorSavva, Petros G.-
dc.contributor.authorMeshkovsky, Igor-
dc.contributor.authorAnayiotos, Andreas-
dc.contributor.authorCosta, Costas-
dc.date.accessioned2019-04-13T20:02:42Z-
dc.date.available2019-04-13T20:02:42Z-
dc.date.issued2019-04-04-
dc.identifier.citationJournal of Chemical Technology and Biotechnology, 2019, vol. 94, no. 4, pp. 1134-1143en_US
dc.identifier.issn02682575-
dc.description.abstractBACKGROUND: Silver (Ag) has been long known to be a strong antimicrobial agent and has been used as such either as AgNO3 or in the form of nanoparticles. The antimicrobial activity of nanosilver is believed to be due to free metal ion toxicity, the consequent generation of excess reactive oxygen species and inhibition of gene expression in several cells. RESULTS: The antimicrobial activity of Ag/Al2O3 spheres was studied after suppression of free Ag ions by using a suitable complexing agent (Ag+ scavenger). It was found that Ag/Al2O3 retained its antimicrobial activity even after the addition of the Ag+ complexing agent, which is in contrast to the behaviour of an AgNO3 solution which became completely inactive. Initial/preliminary transmission electron microscopy and Fourier transform infrared studies indicate possible phospholipid residues on the Ag-supported solid surface. •OH radicals were confirmed to be formed during the antimicrobial process. CONCLUSIONS: The present work provides strong evidence that the antimicrobial property of Ag-supported solids is not exclusively due to the dissolution of surface silver (free Ag+). A possible simplified mechanism is proposed in which the initiation of the antimicrobial reaction is proposed to be a heterogeneous intersurface process, which might include the interaction between the partially positively charged, surface silver atoms and the negatively charged outer membrane (OM) of microbes, and the subsequent activation of a free radical mechanism. Further study and confirmation of the above findings might be decisive for the development of novel Ag-supported solids with limited metal surface dissolution but strong antimicrobial activity useful for the confrontation of particular environmental challenges.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.relation.ispartofJournal of Chemical Technology and Biotechnologyen_US
dc.rights© Society of Chemical Industryen_US
dc.subjectAg-supported solidsen_US
dc.subjectAntimicrobial processen_US
dc.subjectDisinfectionen_US
dc.subjectPsuedocatalysisen_US
dc.subjectSilveren_US
dc.titleNew insights into the antimicrobial treatment of water on Ag-supported solidsen_US
dc.typeArticleen_US
dc.collaborationCyprus University of Technologyen_US
dc.collaborationITMO Universityen_US
dc.subject.categoryChemical Sciencesen_US
dc.journalsSubscriptionen_US
dc.countryCyprusen_US
dc.countryRussiaen_US
dc.subject.fieldNatural Sciencesen_US
dc.publicationPeer Revieweden_US
dc.identifier.doi10.1002/jctb.5860en_US
dc.relation.issue4en_US
dc.relation.volume94en_US
cut.common.academicyear2018-2019en_US
dc.identifier.spage1134en_US
dc.identifier.epage1143en_US
item.fulltextNo Fulltext-
item.languageiso639-1en-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.cerifentitytypePublications-
item.openairetypearticle-
crisitem.journal.journalissn1097-4660-
crisitem.journal.publisherWiley-
crisitem.author.deptDepartment of Chemical Engineering-
crisitem.author.deptDepartment of Mechanical Engineering and Materials Science and Engineering-
crisitem.author.deptDepartment of Chemical Engineering-
crisitem.author.deptDepartment of Mechanical Engineering and Materials Science and Engineering-
crisitem.author.deptDepartment of Chemical Engineering-
crisitem.author.facultyFaculty of Geotechnical Sciences and Environmental Management-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.facultyFaculty of Geotechnical Sciences and Environmental Management-
crisitem.author.facultyFaculty of Engineering and Technology-
crisitem.author.facultyFaculty of Geotechnical Sciences and Environmental Management-
crisitem.author.orcid0000-0002-4999-0231-
crisitem.author.orcid0000-0001-6390-315X-
crisitem.author.orcid0000-0003-4471-7604-
crisitem.author.orcid0000-0002-8459-0356-
crisitem.author.parentorgFaculty of Geotechnical Sciences and Environmental Management-
crisitem.author.parentorgFaculty of Engineering and Technology-
crisitem.author.parentorgFaculty of Geotechnical Sciences and Environmental Management-
crisitem.author.parentorgFaculty of Engineering and Technology-
crisitem.author.parentorgFaculty of Geotechnical Sciences and Environmental Management-
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