W18O49 Nanowhiskers Decorating SiO2 Nanofibers: Lessons from In Situ SEM/TEM Growth to Large Scale Synthesis and Fundamental Structural Understanding

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dc.contributor.authorKundrát, Vojtěchcs
dc.contributor.authorBukvišová, Kristýnacs
dc.contributor.authorNovák, Liborcs
dc.contributor.authorPrůcha, Lukášcs
dc.contributor.authorHouben, Lotharcs
dc.contributor.authorZálešák, Jakubcs
dc.contributor.authorVukusic, Antoniocs
dc.contributor.authorHolec, Davidcs
dc.contributor.authorTenne, Reshefcs
dc.contributor.authorPinkas, Jiřícs
dc.coverage.issue1cs
dc.coverage.volume24cs
dc.date.accessioned2024-02-22T13:46:26Z
dc.date.available2024-02-22T13:46:26Z
dc.date.issued2023-12-05cs
dc.description.abstractTungsten suboxide W18O49 nanowhiskers are a material of great interest due to their potential high-end applications in electronics, near-infrared light shielding, catalysis, and gas sensing. The present study introduces three main approaches for the fundamental understanding of W18O49 nanowhisker growth and structure. First, W18O49 nanowhiskers were grown from gamma-WO3/a-SiO2 nanofibers in situ in a scanning electron microscope (SEM) utilizing a specially designed microreactor (mu Reactor). It was found that irradiation by the electron beam slows the growth kinetics of the W18O49 nanowhisker, markedly. Following this, an in situ TEM study led to some new fundamental understanding of the growth mode of the crystal shear planes in the W18O49 nanowhisker and the formation of a domain (bundle) structure. High-resolution scanning transmission electron microscopy analysis of a cross-sectioned W18O49 nanowhisker revealed the well-documented pentagonal Magn & eacute;li columns and hexagonal channel characteristics for this phase. Furthermore, a highly crystalline and oriented domain structure and previously unreported mixed structural arrangement of tungsten oxide polyhedrons were analyzed. The tungsten oxide phases found in the cross section of the W18O49 nanowhisker were analyzed by nanodiffraction and electron energy loss spectroscopy (EELS), which were discussed and compared in light of theoretical calculations based on the density functional theory method. Finally, the knowledge gained from the in situ SEM and TEM experiments was valorized in developing a multigram synthesis of W18O49/a-SiO2 urchin-like nanofibers in a flow reactor.en
dc.formattextcs
dc.format.extent378-390cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationCrystal Growth and Design. 2023, vol. 24, issue 1, p. 378-390.en
dc.identifier.doi10.1021/acs.cgd.3c01094cs
dc.identifier.issn1528-7505cs
dc.identifier.orcid0000-0001-8530-8298cs
dc.identifier.other187406cs
dc.identifier.urihttps://hdl.handle.net/11012/245193
dc.language.isoencs
dc.publisherAMER CHEMICAL SOCcs
dc.relation.ispartofCrystal Growth and Designcs
dc.relation.urihttps://pubs.acs.org/doi/10.1021/acs.cgd.3c01094cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1528-7505/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectNEAR-INFRARED ABSORPTIONen
dc.subjectTUNGSTEN-OXIDEen
dc.subjectELECTROSPUN NANOFIBERSen
dc.subjectWS2 NANOTUBESen
dc.subjectNANOWIRESen
dc.subjectLITHIUMen
dc.subjectPHOTOLUMINESCENCEen
dc.subjectNANOSTRUCTURESen
dc.subjectPERFORMANCEen
dc.subjectEFFICIENCYen
dc.titleW18O49 Nanowhiskers Decorating SiO2 Nanofibers: Lessons from In Situ SEM/TEM Growth to Large Scale Synthesis and Fundamental Structural Understandingen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-187406en
sync.item.dbtypeVAVen
sync.item.insts2024.02.22 14:46:26en
sync.item.modts2024.02.22 14:13:00en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Příprava a charakterizace nanostrukturcs
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Příprava a charakterizace nanostruktur