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FTIR functional group absorption bands of free PAS and its PAS-ZLH (nanocomposite-A).
| Assignments | Free PAS | PAS-ZLH |
|---|---|---|
| Vas(N–H) | 3490 | Overlapped by O–H stretching 3358 |
| Vs(N–H) | 3381 | |
| V(O–H) in the inter ZnLH, H2O | — | |
| V(C=O) in COOH | 1609, 764 | — |
| VAS(COO–) | — | 1551 |
| Vs(COO–) | — | 1339 |
| Stretching (C–H) | 813, 717 | 821 |
Unit for given numbers is wave number (cm−1).
