Figure 4.
XPS C 1s spectra of the pristine MWCNTs and the five chemical species: (1) graphite;
(2) sp3 carbons; (3) hydroxyl groups; (4) carbonyl groups; and (5) carboxyl groups
Tseng et al. Nanoscale Research Letters 2008 4:234 doi:10.1007/s11671-008-9231-4 |
