High-pressure, high temperature synthesis of a mesoporous α-quartz/bismuth nanowire composite

High temperature, high pressure conditions were used to insert liquid bismuth in 4–6 nm diameter amorphous silica nanotubes. A combination of transmission electron microscopy and neutron powder diffraction indicate that the final composite consists in 5–6 nm semi-conducting Bi nanowires confined in...

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Bibliographic Details
Published in:Solid state sciences 2020-03, Vol.101, p.106125, Article 106125
Main Authors: Zhao, Yixuan, Talbi, Gaël, Clément, Sébastien, Toulemonde, Pierre, Hansen, Thomas, Cambon, Martine, Cambon, Olivier, Beaudhuin, Mickaël, Viennois, Romain, Haines, Julien
Format: Article
Language:English
Subjects:
Bismuth
Chemical Sciences
Guest insertion
High pressure
Material chemistry
Nanocomposites
Silica nanotubes
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Summary:High temperature, high pressure conditions were used to insert liquid bismuth in 4–6 nm diameter amorphous silica nanotubes. A combination of transmission electron microscopy and neutron powder diffraction indicate that the final composite consists in 5–6 nm semi-conducting Bi nanowires confined in insulating mesoporous α-quartz. Such a nanostructured material could be of considerable interest for thermoelectric applications. [Display omitted] •Bismuth was inserted into 4–6 nm silica nanotubes under high-pressure, high-temperature conditions.•The host amorphous nanotubes crystallize in the form of α-quartz.•The obtained nanocomposite consists of 5–6 nm Bi nanowires imbedded in mesoporous α-quartz.•The formation of Bi nanowires modifies their physical properties compared to bulk Bi.
ISSN:1293-2558
1873-3085
DOI:10.1016/j.solidstatesciences.2020.106125