fig2

Figure 2. (A) N2 adsorption-desorption isotherms and pore size distributions; (B) EPR spectra; Deconvolution of XPS spectra (C) B 1s and (D) N 1s of h-BN, CBN and CBN-Zx. EPR: Electron paramagnetic resonance; XPS: X-ray photoelectron spectra; h-BN: hexagonal boron nitride; CBN: carbon-doped boron nitride; CBN-Zx: ZIF-8 derived carbon-doped boron nitride.





