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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 a Jiří PINKAS. Synthesis and characterization of WS2/SiO2 microfibers. \textit{Journal of Materials Science}. Springer, 2021, roč.~56, č.~18, s.~10834-10846. ISSN~0022-2461. Dostupné z: https://dx.doi.org/10.1007/s10853-021-05979-y.
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