Low-Temperature Mineralisation of Titania-Siloxane Composite Layers

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dc.contributor.authorSvoboda, Tomášcs
dc.contributor.authorVeselý, Michalcs
dc.contributor.authorBartoš, Radimcs
dc.contributor.authorHomola, Tomášcs
dc.contributor.authorDzik, Petrcs
dc.coverage.issue1cs
dc.coverage.volume11cs
dc.date.issued2021-01-01cs
dc.description.abstractThis paper deals with low-temperature mineralisation of coatings made with titania-siloxane compositions (TSC). Methyltriethoxysilane has been adopted as the precursor for the siloxane, and during its synthesis, an oligomeric siloxane condensate with methyl moieties acting as TiO2 binder has been produced. These methyl moieties, contained in TSC, provide solubility and prevent gelling, but reduce the hydrophilicity of the system, reduce the transfer of electrons and holes generated in the TiO2. In order to avoid these unfavourable effects, TSC mineralisation can be achieved by nonthermal treatment, for example, by using UV-radiation or plasma treatment. Characterisation of the siloxane was performed by gel permeation chromatography (GPC), which showed the size of the siloxane chain. Thermogravimetric analysis revealed a temperature at which the siloxane mineralises to SiO2. Printed layers of two types of TSC with different siloxane contents were studied by a scanning electron microscope (SEM), where a difference in the porosity of the samples was observed. TSC on fluorine-doped tin oxide (FTO) coated glass and microscopic glass were treated with non-thermal UV and plasma methods. TSC on FTO glass were tested by voltammetric measurements, which showed that the non-thermally treated layers have better properties and the amount of siloxane in the TSC has a great influence on their efficiency. Samples on microscopic glass were subjected to a photocatalytic decomposition test of the model pollutant Acid orange 7 (AO7). Non-thermally treated samples show higher photocatalytic activity than the raw sample.en
dc.formattextcs
dc.format.extent1-13cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationCatalysts. 2021, vol. 11, issue 1, p. 1-13.en
dc.identifier.doi10.3390/catal11010050cs
dc.identifier.issn2073-4344cs
dc.identifier.orcid0000-0002-3557-1861cs
dc.identifier.orcid0000-0001-5365-3134cs
dc.identifier.orcid0000-0003-0550-0533cs
dc.identifier.orcid0000-0002-9774-3497cs
dc.identifier.other171236cs
dc.identifier.researcheridI-8500-2012cs
dc.identifier.urihttp://hdl.handle.net/11012/196513
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofCatalystscs
dc.relation.urihttps://www.mdpi.com/2073-4344/11/1/50cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2073-4344/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjecttitanium oxideen
dc.subjectmethyltriethoxysilaneen
dc.subjectsiloxaneen
dc.subjectplasma treatmenten
dc.subjectUV treatmenten
dc.subjectAO7en
dc.titleLow-Temperature Mineralisation of Titania-Siloxane Composite Layersen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-171236en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:38:51en
sync.item.modts2025.01.17 16:52:19en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav fyzikální a spotřební chemiecs
thesis.grantorVysoké učení technické v Brně. . Masarykova Univerzita v Brněcs
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