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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Published inCarbon (New York) Vol. 63; pp. 240 - 252
Main Authors Jeong, Namjo, Park, Yun Chang, Yoo, Jung Ho
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.11.2013
Elsevier
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
Carbon nanotubes
Infiltration
Preparation
Paraffin wax
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Summary: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.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2013.06.077