Figure 4
The Raman spectra of (a) acid-extracted graphite from those attached to rocks (a-I) before and (a-II) after heat-treatment and (b) ball-milled graphite (b-I) before and (b-II) after heat treatment.
Figure 4 | Scientific Reports
The Raman spectra of (a) acid-extracted graphite from those attached to rocks (a-I) before and (a-II) after heat-treatment and (b) ball-milled graphite (b-I) before and (b-II) after heat treatment.
