Další formáty:
BibTeX
LaTeX
RIS
@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 a 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, roč.~24, č.~1, s.~378-390. ISSN~1528-7483. Dostupné z: https://dx.doi.org/10.1021/acs.cgd.3c01094.
|