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Journal of Materials Science

Erschienen in:

17.03.2021 | Chemical routes to materials

Synthesis and characterization of WS₂/SiO₂ microfibers

verfasst von: Vojtech Kundrat, Rita Rosentsveig, Olga Brontvein, Reshef Tenne, Jiri Pinkas

Erschienen in: Journal of Materials Science | Ausgabe 18/2021

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Abstract

Tungsten disulfide polycrystalline microfibers were successfully synthesized by a process involving electrospinning, calcination, and sulfidation steps. We used an aqueous solution of silicotungstic acid (H₄SiW₁₂O₄₀) and polyvinyl alcohol as precursors for the synthesis of composite fibers by the needle-less electrospinning technique. The obtained green composite fibers (av. diam. 460 nm) were converted by calcination in air to tungsten oxide WO₃ fibers with traces of SiO₂ and a smaller diameter (av. diam. 335 nm). The heat treatment of the WO₃ fibers under flowing H₂/H₂S/N₂ stream led to conversion to tungsten disulfide WS₂ with retention of the fibrous morphology (av. diam. 196 nm). Characterization of the intermediate and final fibers was performed by the XRD, SEM, TEM, HAADF STEM EDS, elemental analyses ICP-OES, and IR spectroscopy methods.

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Vorheriger Artikel A review of recent progress on the silica aerogel monoliths: synthesis, reinforcement, and applications

Nächster Artikel Enhanced photocatalytic hydrogen production on tin disulfide self-assembled from ultrathin sheets with sulfur vacancies generated by doping indium ions

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Titel: Synthesis and characterization of WS2/SiO2 microfibers
verfasst von: Vojtech Kundrat
Rita Rosentsveig
Olga Brontvein
Reshef Tenne
Jiri Pinkas
Publikationsdatum: 17.03.2021
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 18/2021
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-021-05979-y

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