1. FTIR Peak Assignments for Spectra Shown in Figure ,
| wavenumber (cm–1) | type | assignment | comments |
|---|---|---|---|
| 440 | medium | Ti–O backbone | all samples |
| 500 | sharp | Ti–O backbone | all samples |
| 680 | medium | Ti–O backbone | all samples |
| 904 | medium | Ti–O backbone | all samples |
| 950 | sharp | TMA+ | pre-exchange (A, B) |
| 1250–1400 | shoulder | TMA+ | pre-exchange (A, B) |
| 1415 | sharp | TMA+ | pre-exchange (A, B) |
| 1490 | sharp | TMA+ | pre-exchange (A, B) |
| 1635 | medium | H2O/OH | postexchange (C) |
| 1670 | sharp | H2O/OH | pre-exchange (A, B) |
| 3040 | sharp | TMA+ | pre-exchange (A, B) |
| 3250 | broad | H2O/OH | postexchange (C) |
| 3320 | sharp | H2O/OH | pre-exchange (A, B) |
| higher in PMPs (B) | |||
| 3400 | sharp | H2O/OH | pre-exchange (A, B) |
| higher in film (A) |
a
(A–C) in Column 4 are callouts for panels in Figure .