Evaluation of Hydrocalumite-Like Compounds as Catalyst Precursors in the Photodegradation of 2,4-Dichlorophenoxyacetic Acid

Table 3

Wavenumbers and assignations of the bands of the samples.

HC1	HC2	HC3	Assignation
3661, 3612, 3440, 3319	3670, 3618, 3521, 3360	3672, 3616, 3525, 3319, 3360	Stretching vibration of water and hydroxyl groups
1641	—	—	H-O-H bending vibrations of the interlayer water molecules (v2H2O)
—	1562, 1412	1562, 1412	COO antisymmetrical and symmetrical stretching vibrations
1460	—	—	Antisymmetric C=O stretching carbonate vibration
1385	—	—	Symmetric stretching mode of the nitrate ions
—	1365	1367	C=O stretching (v3)
1070	1068	1070	C=O stretching (v1)
873	872	874	Carbonate bending vibration (v2)