Purification of Single-Wall carbon nanotubes by heat treatment and supercritical extraction
نویسندگان
چکیده
منابع مشابه
Purification of single-wall carbon nanotubes by ultrasonically assisted filtration
Ž . An efficient method for purification of single-wall carbon nanotubes SWNT synthesized by the laser-vaporization process has been developed. Amorphous and crystalline carbon impurities and metal particles are removed from SWNT samples by ultrasonically-assisted microfiltration. Sample sonication during the filtration prevents filter contamination and provides for a fine nanotube–nanoparticle...
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Previous Cp experiment [1] gave first evidence for 1D quantum confinement of vibrational modes in SWNT, crossing over to 3-D behaviour at very low T where tubetube interactions become important. These measurements were limited to 2 K. The data did not follow a linear extrapolation to T = 0, which provided a strong motivation to extend the measurement to mK regime. Here we report the first data ...
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The effective parameters of (5, 0) and (5, 5) single-wall carbon nanotubes during the interaction with carbon dioxide as sensors are determined. The interaction of carbon dioxide molecules with internal and external walls of the nanotubes is studied using Gaussian 03 coding by density functional theory (DFT) at the B3LYP/6-311G level of theory. CO2 rotation around tube axles vertically and par...
متن کاملUltralong single-wall carbon nanotubes.
Since the discovery of carbon nanotubes in 1991 by Iijima, there has been great interest in creating long, continuous nanotubes for applications where their properties coupled with extended lengths will enable new technology developments. For example, ultralong nanotubes can be spun into fibres that are more than an order of magnitude stronger than any current structural material, allowing revo...
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Background: Nanotechnology is a new approach that has been lionized in recent years. One of its applications is its consumption as an absorbent. In this study, the single-wall carbon nanotubes (SWCNTs) were used as an absorbent for sampling benzene in the air. Materials and Methods: For this study, SWCNTs manufactured by Iran and SKC’s activated charcoal were used for sampling benzene vapors....
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ژورنال
عنوان ژورنال: Materials Research
سال: 2011
ISSN: 1980-5373,1516-1439
DOI: 10.1590/s1516-14392011005000051