Research / 2019 / Article / Fig 2

Research Article

Natural Nanofibrous Cellulose-Derived Solid Acid Catalysts

Figure 2

Surface chemistry characterization of nanofibrous SACs. (a) FT-IR spectra, (b) 13C MAS NMR spectra and (c) XPS survey spectra of BC-CNFs-400 and BC-CNFs-400-SO3H. (d) C 1s, (e) O 1s and (f) S 2p high resolution XPS spectra of BC-CNFs-400 and BC-CNFs-400-SO3H. (g) C K-edge, (h) O K-edge, and (i) S K-edge XAS spectra of BC-CNFs-400 and BC-CNFs-400-SO3H.