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245 1 0 _aHigh resolution XPS characterization of chemical functionalised MWCNTs and SWCNTs
490 0 _vCarbon, 43(1), p.153-161, 2005
520 3 _aHigh 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 C1s 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
650 1 4 _aCARBON NANOTUBES
650 1 4 _aCHEMICALLY MODIFIED CARBON
650 1 4 _aHEAT TREATMENT
650 1 4 _aX-RAY PHOTOELECTRON SPECTROSCOPY
650 1 4 _aFUNCTIONAL GROUPS
700 1 2 _aOkpalugo, T.I.T.
700 1 2 _aPapakonstantinou, P.
700 1 2 _aMurphy, H.
700 1 2 _aMclaughlin, J.
700 1 2 _aBrown, N.M.D.
856 4 0 _uhttps://drive.google.com/file/d/1iYQU5W5YM52qHq03S_sCU40HtZo-MhCm/view?usp=drivesdk
_zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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