Synthesis and characterization of WS2/SiO2 microfibers

J 2021

Synthesis and characterization of WS2/SiO2 microfibers

KUNDRÁT, Vojtěch; Rita ROSENTSVEIG; Olga BRONTVEIN; Reshef TENNE; Jiří PINKAS et. al.

Basic information

Original name

Synthesis and characterization of WS2/SiO2 microfibers

Authors

KUNDRÁT, Vojtěch (203 Czech Republic, belonging to the institution); Rita ROSENTSVEIG; Olga BRONTVEIN; Reshef TENNE and Jiří PINKAS (203 Czech Republic, guarantor, belonging to the institution)

Edition

Journal of Materials Science, Springer, 2021, 0022-2461

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

21001 Nano-materials

Country of publisher

United States of America

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 4.682

RIV identification code

RIV/00216224:14310/21:00121314

Organization unit

Faculty of Science

DOI

https://doi.org/10.1007/s10853-021-05979-y

UT WoS

000629868100002

EID Scopus

2-s2.0-85102998847

Keywords in English

Electrospinning; Tungsten disulfide; Silicotungstic Acid; Polyvinyl alcohol; Fibers

Abstract

In the original language

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.

Links

LQ1601, research and development project

Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR

90127, large research infrastructures

Name: CIISB II

Cite

KUNDRÁT, Vojtěch; Rita ROSENTSVEIG; Olga BRONTVEIN; Reshef TENNE and Jiří PINKAS. Synthesis and characterization of WS2/SiO2 microfibers. Journal of Materials Science. Springer, 2021, vol. 56, No 18, p. 10834-10846. ISSN 0022-2461. Available from: https://doi.org/10.1007/s10853-021-05979-y.

@article{1756496,
   author = {Kundrát, Vojtěch and Rosentsveig, Rita and Brontvein, Olga and Tenne, Reshef and Pinkas, Jiří},
   article_number = {18},
   doi = {https://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://doi.org/10.1007/s10853-021-05979-y.

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