Functional groups | Wavelength (cm −1 ) of corresponding functional groups ( ι -car) | ι -car- γ - Fe 2 O 3 composite | |
---|---|---|---|
Hydroxyl | 3000 - 3600 | 3451 | -3364 |
C-H stretch | 2900 - 2700 | 2916 | -2934 |
Ester sulfate | 1220 - 1260 | 1260 | -1259 |
3,6 anhydrogalactose | 928 - 933 | 894- | 917 |
G4S | 840 - 850 | 848- | 846 |
3,6 anhydrogalactose – 2- sulfate | 800 - 805 | 804- | 816 |
Fe –O stretch | 500 - 400 | --- | 417 |