Investigation of the potential application of sodium ...
May 01, 2017· However, FTIRspectrum of bentonite powder showed a band at 3625 cm −1 of the Si–OH stretching shifting in the broad band of water O–H stretching and a shoulder at 3650 cm1 were observed in wetted bentonite tablet which can be caused by Si–OH stretching band and HO–H vibration of the H 2 O adsorbed on silica surface .