Table 1.
FTIR vibrational wave numbers of the functional groups
| Assignment | (3C) INH (cm−1) | (3B) Nanocomposite-A (cm−1) | (3A) Nanocomposite-B (cm−1) |
|---|---|---|---|
| N–H stretching | 3,29933 | Overlapped with OH of LDH and inter layer water21 | Overlapped with OH of LDH and interlayer water |
| v (OH) in the layer; H2O with OH stretching | – | 3,000–3,45021 | 3,424 |
| C–H asym stretching | 3,104 | Overlapped with OH of LDH and interlayer water | Overlapped with OH of LDH and interlayer water |
| C–H sym stretching | 3,008 | Overlapped with OH of LDH and interlayer water | Overlapped with OH of LDH and interlayer water |
| C=O | 1,660 | 1,600 | 1,608 |
| N–H bending | 1,546 | 1,544 | 1,546 |
| NH2 waging | 1,32733,34 | 1,382 | 1,383 |
| N–N | 1,21933,34 | 1,219 | 1,219 |
Abbreviations: asym, assymetric; FTIR, Fourier transform infrared; INH, isoniazid; LDH, layered double hydroxide; sym, symmetric.