fig4
Figure 4. Microstructural characterization of OHC, SHC, and SGHC-8: (A-C) SEM images, (D) XRD patterns, (E) Raman spectra, (F) N2 adsorption/desorption results, (G) TEM image of SGHC-8, and (H) SAXS profile of SGHC-8 with an inset comparing the characteristic pore radius and Porod exponent of OHC and SGHC-8. XRD: X-ray diffraction; TEM: transmission electron microscopy; SAXS: small-angle X-ray scattering; OHC: oxidized coal-derived hard carbon; SHC: chitosan-loaded oxidized coal-derived hard carbon; SEM: scanning electron microscopy.
