“…a). The peaks observed at 1,720, 1,624, and 1,043 cm −1 correspond to C=O stretching, unoxidized sp 2 C‐C bonds, skeletal C‐O stretching respectively, confirming the oxidation of GO sheet . For PANI, the absorption peaks are observed at 1,546, 1,465, 1,286, and 1,230 cm −1 corresponding to the C=C quinoid, C=C benzenoid, C‐N stretching mode of the aromatic amine, C‐N‐C stretching vibration in the polaron structure , respectively as shown in Fig…”