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Table 2 Relative fractions of the C and O contributions derived from peak fitting of high-resolution C 1 s and O 1 s XPS spectra

From: Overcoming biomass recalcitrance by synergistic pretreatment of mechanical activation and metal salt for enhancing enzymatic conversion of lignocellulose

Sample Relative fraction of C (%) Relative fraction of O (%)
C1 C2 C3 O1 O2
Untreated SCB 69.04 25.02 5.94 19.19 81.81
MA-pretreated SCB 56.65 33.20 10.15 20.95 79.05
MA + AlCl3 pretreated SCB 36.70 43.70 16.00 25.37 74.63
MA + FeCl3 pretreated SCB 37.08 48.21 14.71 23.37 76.63
MA + Al(NO3)3 pretreated SCB 36.42 48.14 15.43 23.95 76.05
MA + Fe(NO3)3 pretreated SCB 36.63 47.82 15.55 24.64 75.36