Research Article
Synthesis of Carbon Nanofibers with Maghemite via a Modified Sol-Gel Technique
Figure 4
(a) XPS survey spectra of CNF/γ-Fe2O3, CNF-COOH and CNF; high resolution XPS spectra, showing (b) Fe 2p1/2 and Fe 2p3/2 regions and (c) O 1s region.
(a) |
(b) |
(c) |