Facile synthesis of WO3 fibers via centrifugal spinning as an efficient UV-and VIS-light-driven photocatalyst

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dc.contributor.authorHromádko, Luděkcs
dc.contributor.authorMotola, Martincs
dc.contributor.authorČičmancová, Veronikacs
dc.contributor.authorBulánek, Romancs
dc.contributor.authorMacák, Jancs
dc.coverage.issue24cs
dc.coverage.volume47cs
dc.date.issued2021-12-15cs
dc.description.abstractThis paper demonstrates, for the first time, synthesis of uniform and crystalline WO3 mesopomus fibers with a diameter of approximate to 1 mu m via centrifugal spinning. This was achieved by using a stable aqueous precursor solution based on ammonium metatungstate (AMT, (NH4)6H(2)W(12)O(40)center dot xH(2)O)) and polyvinyl pyrrolidone (PVP, (C6H9NO)(n)). Annealing at 300 degrees C for 1 h followed by an additional annealing at 500 degrees C for 6 h was conducted to obtain crystalline WO3 fibers. The resulting centrifugally spun WO3 fibers possess approx. 1.4-4 times enhancement in photocatalytic activity under UV (k = 0.0205 min(-1)) and VIS (k = 0.0109 min(-1)) light irradiation compared to that of electrospun WO3 fibers and commercially available WO3 nanoparticles. This is due to the increased specific surface area of the centrifugally spun WO3 fibers (S-BET = 22.3 m(2)/g) compared to electrospun WO3 fibers (S-BET = 7.4 m(2)/g) and WO3 nanoparticles (S-BET = 6.4 m(2)/g). On the other hand, optical properties of all tested materials (including optical band gap) were nearly the same.en
dc.formattextcs
dc.format.extent35361-35365cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationCERAMICS INTERNATIONAL. 2021, vol. 47, issue 24, p. 35361-35365.en
dc.identifier.doi10.1016/j.ceramint.2021.09.079cs
dc.identifier.issn1873-3956cs
dc.identifier.orcid0000-0001-7091-3022cs
dc.identifier.other175432cs
dc.identifier.scopus34872408700cs
dc.identifier.scopus55655855500cs
dc.identifier.urihttp://hdl.handle.net/11012/203305
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofCERAMICS INTERNATIONALcs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0272884221028583cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1873-3956/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectCentrifugal spinningen
dc.subjectFibersen
dc.subjectWO3en
dc.subjectPhotocatalysisen
dc.titleFacile synthesis of WO3 fibers via centrifugal spinning as an efficient UV-and VIS-light-driven photocatalysten
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-175432en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:51:18en
sync.item.modts2025.01.17 16:48:09en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé nízkodimenzionální nanomateriálycs
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Pokročilé nízkodimenzionální nanomateriály