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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