Fig. 1c, d, and e represents the 0.1%, 0.3% and 0.5% incorporated ZnO in chi- tosan matrix in which the N H bonded to the O H vibration shifted
towards lower frequency from 3600 cm−1 to 3569 cm−1 , 3540 cm−1
and 3330 cm−1 , respectively, which is due to the reaction between
the amine group in the chitosan and the metal oxide and the 0.5% incorporated ZnO film was found to be the best film due to the better reaction