Table 2 FTIR specific data about the molecular band assignments. \(\tilde{V}\)*: wavenumber (cm−1).
From: Smart foliar fertilizer based on Zn-Alg-CaCO₃ microparticles improves Aquaponic tomato cultivation
Sample description | \(\tilde{V}\)(cm−1) * | Chemical functional groups | References |
|---|---|---|---|
Alg | 1027.77 ν | Elongation of C-O groups | |
1298.51 ν | C-O stretching vibration | ||
1414.55 ν | Symmetric C = O vibration | ||
1612.22 ν | Asymmetric stretching vibration of COO groups | ||
2155.37 ν | Symmetric C = O vibration | ||
2925.95 ν | Symmetric C = O vibration | ||
3446.23 ν | O-H stretching vibrations | ||
Zn-Alg-CaCO3 | 418 ν | Stretching vibrations of tetrahedral group Zn-O | |
575.9 ν | Metal-oxygen (Zn-O stretching vibrations) vibration mode | ||
1050 ν | Stretching modes of Zn-O bond | ||
712 δ | Bending in-plane deformation mode vibrations of the O-C-O groups | ||
871.68 δ | Out-of-plane bending vibration of (CO3)2− | ||
1054.88 ν | ν1 mode of calcite (symmetric C-O stretching) | ||
1423.47 ν | Asymmetric stretching (ν3) of C-O bond | ||
1604.96 ν | Symmetric stretching of carboxyl group [C(= O)-OH] | ||
1805 ν | ν1 + ν4 symmetric stretching of (CO3)2− | ||
2960.25 ν | Symmetric ν C = O vibration | ||
3417.29 ν | O-H stretching vibrations | ||
Zn-O | 351 | Stretching vibrations of tetrahedral group Zn-O | |
520 | Metal-oxygen (Zn-O stretching vibrations) | ||
701 | ν mode of Zn-O interatomic bond | ||
876 | ν mode of Zn-O interatomic bond | ||
1033 | ν mode of Zn-O interatomic bond | ||
1446 | stretching vibration of (ν C = C) in the capping agent | ||
1634 | stretching vibration of (ν C = C) in the capping agent | ||
2367 | stretching vibration of (ν C-O) * | ||
2918 | stretching vibration of (ν C = O) * | ||
3438 | O-H stretching vibrations |
