Antimicrobial activity of TiO2:Ag nanocrystalline heterostructures: Experimental and theoretical insights

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dc.contributor.authorAndré, Rafaela S.
dc.contributor.authorZamperini, Camila A. [UNESP]
dc.contributor.authorMima, Ewerton G. [UNESP]
dc.contributor.authorLongo, Valéria M.
dc.contributor.authorAlbuquerque, Anderson R. [UNESP]
dc.contributor.authorSambrano, Júlio R. [UNESP]
dc.contributor.authorMachado, Ana L. [UNESP]
dc.contributor.authorVergani, Carlos E. [UNESP]
dc.contributor.authorHernandes, Antonio C.
dc.contributor.authorVarela, José A. [UNESP]
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionCiência e Tecnologia Do Sertão Pernambucano
dc.date.accessioned2018-12-11T16:58:11Z
dc.date.available2018-12-11T16:58:11Z
dc.date.issued2015-09-28
dc.description.abstractWe report the synthesis and characterization of silver-decorated titanium dioxide (TiO2:Ag) nanoparticles, as well as a discussion of their antimicrobial activity. This material was synthesized by microwave-assisted hydrothermal treatment and characterized by complementary techniques. The minimum inhibitory concentration and minimum bactericidal/fungicidal concentration of TiO2:Ag nanoparticles against planktonic and biofilm-forming strains of methicillin-resistant Staphylococcus aureus, Candida species (spp.) and the total biofilm mass were determined. The basis of the biological activity of TiO2:Ag was investigated by electronic analysis of the material using theoretical quantum chemical calculations. In the proposed mechanism of action, the impregnated semiconductor donates electrons to the forbidden band gaps in the metal, generating point defects, with partially located electrons and holes at the surface, initiating a radical process involving the solvent and biological target. Our results suggest that this TiO2:Ag nanomaterial has potential for use in the development of new therapeutic agents.en
dc.description.affiliationUFSCar - Universidade Federal de São Carlos Department of Chemistry
dc.description.affiliationUNESP - Universidade Estadual Paulista Instituto de Química
dc.description.affiliationUNESP - Universidade Estadual Paulista Escola de Odontologia de Araraquara Departamento de Materias Odontológicos e Próteses Dentárias
dc.description.affiliationUSP - Universidade de São Paulo Instituto de Física de São Carlos
dc.description.affiliationUNESP - Universidade Estadual Paulista Grupo de Modelagem e Simulação Molecular, P.O. Box 477
dc.description.affiliationInstituto Federal de Educação Ciência e Tecnologia Do Sertão Pernambucano, IFSetão-PE
dc.description.affiliationUnespUNESP - Universidade Estadual Paulista Instituto de Química
dc.description.affiliationUnespUNESP - Universidade Estadual Paulista Escola de Odontologia de Araraquara Departamento de Materias Odontológicos e Próteses Dentárias
dc.description.affiliationUnespUNESP - Universidade Estadual Paulista Grupo de Modelagem e Simulação Molecular, P.O. Box 477
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent87-95
dc.identifierhttp://dx.doi.org/10.1016/j.chemphys.2015.07.020
dc.identifier.citationChemical Physics, v. 459, p. 87-95.
dc.identifier.doi10.1016/j.chemphys.2015.07.020
dc.identifier.file2-s2.0-84940203462.pdf
dc.identifier.issn0301-0104
dc.identifier.lattes6284168579617066
dc.identifier.scopus2-s2.0-84940203462
dc.identifier.urihttp://hdl.handle.net/11449/172025
dc.language.isoeng
dc.relation.ispartofChemical Physics
dc.relation.ispartofsjr0,580
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAntimicrobial activity
dc.subjectDFT
dc.subjectNano crystalline
dc.subjectTiO2:Ag
dc.titleAntimicrobial activity of TiO2:Ag nanocrystalline heterostructures: Experimental and theoretical insightsen
dc.typeArtigo
unesp.author.lattes6284168579617066[6]
unesp.author.lattes8000248781842587[7]
unesp.author.lattes3003130522427820[8]
unesp.author.orcid0000-0002-2718-428X[7]
unesp.author.orcid0000-0002-7375-4714[8]

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