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High resolution XPS characterization of chemical functionalised MWCNTs and SWCNTs

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Okpalugo, TIT, Papakonstantinou, P, Murphy, H, McLaughlin, JAD and Brown, NMD (2005) High resolution XPS characterization of chemical functionalised MWCNTs and SWCNTs. Carbon, 43 (1). pp. 153-161. [Journal article]

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URL: http://dx.doi.org/10.1016/j.carbon.2004.08.033

DOI: doi:10.1016/j.carbon.2004.08.033

Abstract

High resolution XPS analysis of chemical functionalised multi-wall carbon nanotubes (MWCNTs) and single wall carbon nanotubes (SWCNT) was done with ESCA300 (overall instrument resolution of 0.35 eV). Information to the degree of functionalisation was ascertained by argon ion bombardment of the samples followed by XPS analysis to detect the functional groups, the percentage atomic concentration of various elements present and whether or not the detected functional groups imposed a chemical shift on the CNT atoms. The results show that true chemical functionalisation was achieved and by argon ion bombardment these functional groups can be altered relative to the C 1s carbon atoms of the CNT. The choice of chemicals used for functionalisation, the techniques employed and the types of nanotubes treated are important factors in chemical characterisation. The carbon atom on the nanotube ring to which the functional group (atom) is bonded, the chirality of the CNT, the electronegativity of the functional group, the bond type and whether the CNT is single-wall or multi-wall, or cut (short) could play a role in determining the chemical shift on the CNTs atoms. These investigations are relevant to chemical functionalisation of carbon nanotubes for various applications for example DNA sensors and other biomedical sensors.Copyright: Elsevier 2005

Item Type:Journal article
Keywords:Carbon nanotubes, Chemically modified carbon; B. Heat treatment; C. X-ray photoelectron spectroscopy; D. Functional groups
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:1225
Deposited By:Mrs Ann Blair
Deposited On:27 Nov 2009 13:54
Last Modified:30 Sep 2013 15:14

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