fig3

Figure 3. (A) XRD patterns; (B) Raman spectra; (C) FTIR spectroscopy; (D) Comparison of d₀₀₂ and I_D/I_G; (E and F) Comparison of L_a and L_c; (G) N₂ adsorption-desorption isotherms at 77 K; (H) Pore diameter distributions based on N₂ adsorption-desorption isotherms; (I) Comparison of surface area and micropore content. XRD: X-ray diffraction; FTIR: Fourier transform infrared spectroscopy.