Sample | FT-IR data | ||
Peak (cm−1) | Bond | Attribution | |
AC | 3391 | -OH | Phenol (graphitic structure) |
1709 | -C=O | Saturated carboxylic acid | |
1530 | -OH | Carboxylic acid | |
1221 | -COOH | Carboxylic acid | |
771 | -O-M | Metal-oxygen (impurities) | |
AC/Fe3O4 | 1704 | -C=O | Saturated carboxylic acid |
1578 | -OH | Carboxylic acid | |
1220 | -COOH | Carboxylic acid | |
773 | -O-M | Metal-oxygen (magnetite) |