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@article{2361559,
author = {Kundrát, Vojtěch and Bukvisova, Kristyna and Novak, Libor and Prucha, Lukas and Houben, Lothar and Zalesak, Jakub and Vukusic, Antonio and Holec, David and Tenne, Reshef and Pinkas, Jiří},
article_location = {WASHINGTON},
article_number = {1},
doi = {http://dx.doi.org/10.1021/acs.cgd.3c01094},
keywords = {NEAR-INFRARED ABSORPTION; TUNGSTEN-OXIDE; ELECTROSPUN NANOFIBERS; WS2 NANOTUBES},
language = {eng},
issn = {1528-7483},
journal = {CRYSTAL GROWTH & DESIGN},
title = {W18O49 Nanowhiskers Decorating SiO2 Nanofibers: Lessons from In Situ SEM/TEM Growth to Large Scale Synthesis and Fundamental Structural Understanding},
url = {https://pubs.acs.org/doi/10.1021/acs.cgd.3c01094},
volume = {24},
year = {2024}
}
TY - JOUR
ID - 2361559
AU - Kundrát, Vojtěch - Bukvisova, Kristyna - Novak, Libor - Prucha, Lukas - Houben, Lothar - Zalesak, Jakub - Vukusic, Antonio - Holec, David - Tenne, Reshef - Pinkas, Jiří
PY - 2024
TI - W18O49 Nanowhiskers Decorating SiO2 Nanofibers: Lessons from In Situ SEM/TEM Growth to Large Scale Synthesis and Fundamental Structural Understanding
JF - CRYSTAL GROWTH & DESIGN
VL - 24
IS - 1
SP - 378-390
EP - 378-390
PB - AMER CHEMICAL SOC
SN - 15287483
KW - NEAR-INFRARED ABSORPTION
KW - TUNGSTEN-OXIDE
KW - ELECTROSPUN NANOFIBERS
KW - WS2 NANOTUBES
UR - https://pubs.acs.org/doi/10.1021/acs.cgd.3c01094
N2 - Tungsten 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.
ER -
KUNDRÁT, Vojtěch, Kristyna BUKVISOVA, Libor NOVAK, Lukas PRUCHA, Lothar HOUBEN, Jakub ZALESAK, Antonio VUKUSIC, David HOLEC, Reshef TENNE and Jiří PINKAS. W18O49 Nanowhiskers Decorating SiO2 Nanofibers: Lessons from In Situ SEM/TEM Growth to Large Scale Synthesis and Fundamental Structural Understanding. \textit{CRYSTAL GROWTH \&{}amp; DESIGN}. WASHINGTON: AMER CHEMICAL SOC, 2024, vol.~24, No~1, p.~378-390. ISSN~1528-7483. Available from: https://dx.doi.org/10.1021/acs.cgd.3c01094.
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