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@article{1756496, author = {Kundrát, Vojtěch and Rosentsveig, Rita and Brontvein, Olga and Tenne, Reshef and Pinkas, Jiří}, article_number = {18}, doi = {http://dx.doi.org/10.1007/s10853-021-05979-y}, keywords = {Electrospinning; Tungsten disulfide; Silicotungstic Acid; Polyvinyl alcohol; Fibers}, language = {eng}, issn = {0022-2461}, journal = {Journal of Materials Science}, title = {Synthesis and characterization of WS2/SiO2 microfibers}, url = {https://link.springer.com/article/10.1007%2Fs10853-021-05979-y}, volume = {56}, year = {2021} }
TY - JOUR ID - 1756496 AU - Kundrát, Vojtěch - Rosentsveig, Rita - Brontvein, Olga - Tenne, Reshef - Pinkas, Jiří PY - 2021 TI - Synthesis and characterization of WS2/SiO2 microfibers JF - Journal of Materials Science VL - 56 IS - 18 SP - 10834-10846 EP - 10834-10846 PB - Springer SN - 00222461 KW - Electrospinning KW - Tungsten disulfide KW - Silicotungstic Acid KW - Polyvinyl alcohol KW - Fibers UR - https://link.springer.com/article/10.1007%2Fs10853-021-05979-y N2 - 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. ER -
KUNDRÁT, Vojtěch, Rita ROSENTSVEIG, Olga BRONTVEIN, Reshef TENNE and Jiří PINKAS. Synthesis and characterization of WS2/SiO2 microfibers. \textit{Journal of Materials Science}. Springer, 2021, vol.~56, No~18, p.~10834-10846. ISSN~0022-2461. Available from: https://dx.doi.org/10.1007/s10853-021-05979-y.
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