Manganese Dioxide Nanoparticles Prepared by Laser Ablation as Materials with Interesting Electronic, Electrochemical, and Disinfecting Properties in Both Colloidal Suspensions and Deposited on Fluorine-Doped Tin Oxide

dc.creatorÁvila Torres, Yenny Patricia
dc.creatorCorrales, Jhonatan
dc.creatorAcosta, Jorge
dc.creatorCastro, Sandra
dc.creatorRiascos, Henry
dc.creatorSerna Galvis, Efraim Adolfo
dc.creatorTorres Palma, Ricardo Antonio
dc.date2023-02-03T15:25:20Z
dc.date2023-02-03T15:25:20Z
dc.date2022
dc.date.accessioned2024-04-23T14:07:59Z
dc.date.available2024-04-23T14:07:59Z
dc.identifierCorrales, J.; Acosta, J.; Castro, S.; Riascos, H.; Serna-Galvis, E.; Torres-Palma, R.A.; Ávila-Torres, Y. Manganese Dioxide Nanoparticles Prepared by Laser Ablation as Materials with Interesting Electronic, Electrochemical, and Disinfecting Properties in Both Colloidal Suspensions and Deposited on Fluorine-Doped Tin Oxide. Nanomaterials 2022, 12, 4061. https:// doi.org/10.3390/nano12224061
dc.identifierhttps://hdl.handle.net/10495/33350
dc.identifier10.3390/nano12224061
dc.identifier2079-4991
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9229052
dc.descriptionABSTRACT: Nanoparticles (NPs) of α-MnO2 have high applicability in photoelectrochemical, heterogeneous photocatalysis, optical switching, and disinfection processes. To widen this panorama about MnO2 NPs, the formation of this material by laser ablation and deposition by dip-coating on fluorine-doped tin oxide (FTO), were considered in this study. The optical, spectroscopic, electrochemical characterization, and the evaluation of the antimicrobial activity, plus the photocatalytic response, were measured herein in colloidal media and deposited. For the deposition of NPs on FTO sheet, an anode is produced with a pseudocapacitive behavior, and 2.82 eV of band gap (GAP) in comparison with colloidal NPs for a value of 3.84 eV. Both colloidal suspension and deposited NPs have intrinsic antibacterial activity against two representative microorganisms (E. coli and S. aureus), and this biological activity was significantly enhanced in the presence of UVA light, indicating photocatalytic activity of the material. Thus, both the colloidal suspension and deposited NPs can act as disinfecting agents themselves or via light activation. However, an antibacterial behavior different for E. coli and S. aureus was observed, in function of the aggregation state, obtaining total E. coli disinfection at 30 min for deposited samples on FTO.
dc.descriptionCOL0001923
dc.descriptionCOL0125116
dc.format16
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherMDPI
dc.publisherCatalizadores y Adsorbentes
dc.publisherGrupo de Investigación en Remediación Ambiental y Biocatálisis
dc.publisherBasilea, Suiza
dc.relationNanomaterials
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by/2.5/co/
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.rightshttps://creativecommons.org/licenses/by/4.0/
dc.subjectReactive Oxygen Species
dc.subjectEspecies Reactivas de Oxígeno
dc.subjectAntiinfecciosos
dc.subjectAnti-Infective Agents
dc.subjectFotocatálisis
dc.subjectPhotocatalysis
dc.titleManganese Dioxide Nanoparticles Prepared by Laser Ablation as Materials with Interesting Electronic, Electrochemical, and Disinfecting Properties in Both Colloidal Suspensions and Deposited on Fluorine-Doped Tin Oxide
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typehttp://purl.org/coar/resource_type/c_2df8fbb1
dc.typehttps://purl.org/redcol/resource_type/ART
dc.typeArtículo de investigación


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