FTIR for inorganic silica fillers, functionalized and non functionalized.

I have a silica (A200) – not functionalized and another silica 2 silicas which are functionalized Aerosil R974 and Aeorsil R812. I will provide the structure of each and I want you to draw roughly what peaks I would be seeing in an FTIR and what each peak demonstrates. I want you to point out the differences between the 3 different FTIR spectrums that you will be drawing. I also attached an IR analysis for the frequencies in case it helps.