Preparation of highly pure and crystalline carbon nanotubes and their infiltration by paraffin wax

Carbon nanotubes (CNTs) of ultrahigh purity and high crystallinity, which could be used for the encapsulation of nanoscaled materials, were fabricated by the heat treatment of disordered CNT-encapsulated In–Sn nanowires at temperatures lower than 1800°C in H2 under vacuum conditions (pressure of app...

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Veröffentlicht in:	Carbon (New York) 2013-11, Vol.63, p.240-252
Hauptverfasser:	Jeong, Namjo, Park, Yun Chang, Yoo, Jung Ho
Format:	Artikel
Sprache:	eng
Schlagworte:	Carbon Carbon nanotubes Cross-disciplinary physics: materials science rheology Crystal structure Crystallinity Encapsulation Exact sciences and technology Materials science Nanocomposites Nanomaterials Nanoscale materials and structures: fabrication and characterization Nanostructure Nanotubes Nanowires Paraffin wax Physics Transmission electron microscopy
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creator	Jeong, Namjo Park, Yun Chang Yoo, Jung Ho
description	Carbon nanotubes (CNTs) of ultrahigh purity and high crystallinity, which could be used for the encapsulation of nanoscaled materials, were fabricated by the heat treatment of disordered CNT-encapsulated In–Sn nanowires at temperatures lower than 1800°C in H2 under vacuum conditions (pressure of approximately 1Pa). The results showed that nearly 100% of the encapsulated In–Sn alloy was removed at 1800°C, and as much as 99.99% of it at 1600°C. The prepared CNTs were also filled with paraffin wax. A vacuum-based infiltration–purification process proved effective for fabricating the CNT–paraffin hybrid structures at a high filling yield, which was confirmed by thermograms and TEM observations.
doi_str_mv	10.1016/j.carbon.2013.06.077
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The results showed that nearly 100% of the encapsulated In–Sn alloy was removed at 1800°C, and as much as 99.99% of it at 1600°C. The prepared CNTs were also filled with paraffin wax. 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subjects	Carbon Carbon nanotubes Cross-disciplinary physics: materials science rheology Crystal structure Crystallinity Encapsulation Exact sciences and technology Materials science Nanocomposites Nanomaterials Nanoscale materials and structures: fabrication and characterization Nanostructure Nanotubes Nanowires Paraffin wax Physics Transmission electron microscopy
title	Preparation of highly pure and crystalline carbon nanotubes and their infiltration by paraffin wax
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