Table 2 FTIR interpretation of compounds in Ch-Cu NPs.
No | Wave Number cm-1 Reference | Wave Number cm-1 Cu NPs | Functional group assignment | Compounds identified |
|---|---|---|---|---|
1 | 3500–3300 | 3457.12 | Chitosan and O–H stretch | Poly hydroxy compound |
2 | 3100 | 3169.75 | COOH stretch | Carboxylic acid |
3 | 2800–2900 | 2914.83 | Asymmetric stretching of –CH (CH2) vibration | Saturated aliphatic lipids compound |
4 | 1600 | 1613.94 | C = O stretching vibration, Ketone group | Ketone compound |
5 | 1400 | 1467.51 | C = N stretching in imines or oximes, or C-N stretching in aliphatic amines | Amide III compound |
6 | 1100–1000 | 1063.48 | C-O stretch or C-N stretch | Alcohols, phenols, ethers or esters compound aromatic amines compound |
