Figure 1. Summary of the mean, maximum, and minimum oxygen 1s binding energies for different organic functionalities according to the work of Beamson and Briggs [1]. Binding energy calibration presented here have been adjusted to the main aliphatic C 1s peak at 284.8 eV [2].
Additional Notes:
C-OH (aliphatic) Ref to C 1s at 284.8 eV: Average 532.7 eV, Min. 532.5 eV, Max. 532.9 eV
C-OH (aliphatic) Ref to C 1s at 285.0 eV: Average 532.9 eV, Min. 532.7 eV, Max. 533.1 eV
C-OH (aromatic) Ref to C 1s at 284.8 eV: 533.4 eV
C-OH (aromatic) Ref to C 1s at 285.0 eV: 533.6 eV
Also note that Si 2p3/2 for PDMS (silicone) is at 101.79 eV (Si 2p = 102.0 eV) with the C 1s at 284.38 eV and O 1s at 532.00 eV (referenced to aliphatic C at 285.0 eV). If we shift the C 1s to 285.0 eV then Si 2p3/2 is at 102.41 eV (Si 2p = 102.6 eV) and O 1s is at 532.62 eV for silicone. If we then shift the C 1s to 284.8 eV then Si 2p3/2 is at 102.21 eV (Si 2p = 102.4 eV) and O 1s is at 532.42 eV for silicone.
C-OH (aromatic) Ref to C 1s at 285.0 eV: 533.6 eV
Also note that Si 2p3/2 for PDMS (silicone) is at 101.79 eV (Si 2p = 102.0 eV) with the C 1s at 284.38 eV and O 1s at 532.00 eV (referenced to aliphatic C at 285.0 eV). If we shift the C 1s to 285.0 eV then Si 2p3/2 is at 102.41 eV (Si 2p = 102.6 eV) and O 1s is at 532.62 eV for silicone. If we then shift the C 1s to 284.8 eV then Si 2p3/2 is at 102.21 eV (Si 2p = 102.4 eV) and O 1s is at 532.42 eV for silicone.
References:
[1] G. Beamson, D. Briggs, High Resolution XPS of Organic Polymers - The Scienta ESCA300 Database, Wiley Interscience, 1992, Appendices 3.1 and 3.2.