fig3
Figure 3. Structural evolution and compositional analysis of FR-HC and R-HC-x samples. XRD patterns (A), Raman spectra (B), and XPS survey spectra (C). High-resolution C 1s XPS spectra (D). N2 adsorption-desorption isotherms (E), pore-size distribution profiles (F), SAXS curves (G), and closed-pore diameters and fractal dimensions obtained from SAXS fitting analysis (H). FR: Fresh reeds; XRD: X-ray diffraction; XPS: X-ray photoelectron spectroscopy; SAXS: small-angle X-ray scattering.
