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Gas adsorption studies of CO2 and N2 in spatially aligned double-walled carbon nanotube arrays

  • Gas adsorption studies (CO2 and N2) over a wide pressure range on vertically, highly aligned dense double-walled carbon nanotube arrays of high purity and high specific surface area are reported. At high pressures, the adsorption capacity of these materials was found to be comparable to those of metal organic frameworks and mesoporous molecular sieves. These highly aligned CNT arrays wereGas adsorption studies (CO2 and N2) over a wide pressure range on vertically, highly aligned dense double-walled carbon nanotube arrays of high purity and high specific surface area are reported. At high pressures, the adsorption capacity of these materials was found to be comparable to those of metal organic frameworks and mesoporous molecular sieves. These highly aligned CNT arrays were chemically modified by treating with oxygen plasma and structurally modified by decreasing the diameter of individual carbon nanotubes. Oxygen plasma treatment led to grafting of a large number of C–O functional groups onto the CNT surface, which further increased the gas adsorption capacity. It was found that gas adsorption is dependent on tube diameter and increases with decrease of the individual CNT diameter in the CNT bundles. As results of our studies we have found that at lower pressure regimes, plasma functionalized carbon nanotubes exhibit better adsorption characteristics whereas at higher pressures, lower diameter carbon nanotube structures exhibited better gas adsorption characteristics.show moreshow less

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Metadaten
Document Type:Article (reviewed)
Zitierlink: https://opus.hs-offenburg.de/1950
Bibliografische Angaben
Title (English):Gas adsorption studies of CO2 and N2 in spatially aligned double-walled carbon nanotube arrays
Author:Deepu J. Babu, Marcus LangeStaff Member, Gennady Cherkashinin, Alexander Issanin, Reiner StaudtStaff MemberGND, Jörg J. Schneider
Year of Publication:2013
Publisher:Elsevier
First Page:616
Last Page:623
Parent Title (English):Carbon
Volume:61
ISSN:0008-6223
DOI:https://doi.org/10.1016/j.carbon.2013.05.045
Language:English
Inhaltliche Informationen
Institutes:Fakultät Maschinenbau und Verfahrenstechnik (M+V)
Institutes:Bibliografie
GND Keyword:Kohlenstoff
Formale Angaben
Open Access: Closed Access 
Licence (German):License LogoUrheberrechtlich geschützt