Structure and Photocatalytic Properties of Ni-, Co-, Cu-, and Fe-Doped TiO<sub>2</sub> Aerogels

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dc.contributor.authorTinoco Navarro, Lizeth Katherinecs
dc.contributor.authorBednaříková, Vendulacs
dc.contributor.authorKaštyl, Jaroslavcs
dc.contributor.authorCihlář, Jaroslavcs
dc.coverage.issue5cs
dc.coverage.volume9cs
dc.date.issued2023-04-24cs
dc.description.abstractTiO2 aerogels doped with Ni, Co, Cu, and Fe were prepared, and their structure and photocatalytic activity during the decomposition of a model pollutant, acid orange (AO7), were studied. After calcination at 500 degrees C and 900 degrees C, the structure and composition of the doped aerogels were evaluated and analyzed. XRD analysis revealed the presence of anatase/brookite and rutile phases in the aerogels along with other oxide phases from the dopants. SEM and TEM microscopy showed the nanostructure of the aerogels, and BET analysis showed their mesoporosity and high specific surface area of 130 to 160 m2 g(-1). SEM-EDS, STEM-EDS, XPS, EPR methods and FTIR analysis evaluated the presence of dopants and their chemical state. The concentration of doped metals in aerogels varied from 1 to 5 wt.%. The photocatalytic activity was evaluated using UV spectrophotometry and photodegradation of the AO7 pollutant. Ni-TiO2 and Cu-TiO2 aerogels calcined at 500 degrees C showed higher photoactivity coefficients (kaap) than aerogels calcined at 900 degrees C, which were ten times less active due to the transformation of anatase and brookite to the rutile phase and the loss of textural properties of the aerogels.en
dc.formattextcs
dc.format.extent1-21cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationGels. 2023, vol. 9, issue 5, p. 1-21.en
dc.identifier.doi10.3390/gels9050357cs
dc.identifier.issn2310-2861cs
dc.identifier.orcid0000-0003-2354-3000cs
dc.identifier.orcid0000-0003-0672-7481cs
dc.identifier.orcid0000-0001-8145-604Xcs
dc.identifier.orcid0000-0002-4026-6845cs
dc.identifier.other185775cs
dc.identifier.researcheridG-8477-2014cs
dc.identifier.researcheridH-7211-2014cs
dc.identifier.scopus56600676100cs
dc.identifier.scopus7004377038cs
dc.identifier.urihttp://hdl.handle.net/11012/244724
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofGelscs
dc.relation.urihttps://www.mdpi.com/2310-2861/9/5/357cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2310-2861/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectaerogelsen
dc.subjectanataseen
dc.subjectbrookiteen
dc.subjecttransition metal ionsen
dc.subjectphotocatalytic propertiesen
dc.titleStructure and Photocatalytic Properties of Ni-, Co-, Cu-, and Fe-Doped TiO<sub>2</sub> Aerogelsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-185775en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:47:44en
sync.item.modts2025.01.17 15:28:39en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. ÚMVI-odbor keramiky a polymerůcs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Sdílená laboratoř RP1cs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé keramické materiálycs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé povlakycs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Magneto-Optická a THz Spektroskopiecs
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Pokročilé keramické materiály
Magneto-Optická a THz Spektroskopie
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Sdílená laboratoř RP1
ÚMVI-odbor keramiky a polymerů