Carbon nanotubes Fourier transform infrared

Measurement of adsorption phenomena by chemical means require adsorbents that have a relatively high surface area, preferably in excess of 20-50 m /g, to provide sufficient sensitivity. Such carbons are, e.g., activated carbons, carbon blacks, graphite wear dust, and carbon nanotubes. Physical measurements, such as by X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES), electron energy loss spectroscopy (EELS), Fourier transform infrared (FTIR), and special Raman spectroscopies, can be done with materials of much lower surface area. [Pg.302]

Functional groups attached to oxidized carbon nanotubes were identified by Fourier-transformed infrared spectroscopy by attenuated total reflectance, ATR-FTIR in a Nicolet 6700 FT-IR spectrophotometer at 1068 scans, in the frequency interval of 4000 cm-i to 650 cm-i with resolution of 8 cm-i. [Pg.204]

Functionalized multi-walled carbon nanotubes (MWNTs) were prepared by acid treatment followed by reaction with 3-aminopropyltriethoxysilane. Reaction of silane with oxidized nanotubes was confirmed by Fourier transform infrared (FTIR) spectroscopy and energy dispersive X-ray (EDX) analysis to confirm silicon on the surface of the MWNTs. Raman spectroscopy of the acid-treated MWNTs confirmed formation of surface defects due to carboxyl... [Pg.614]