Effect of TiO2/Ag Nanocomposite Loading on the Optical Properties of Chitosan Film
- 51 Downloads
Effect of TiO2/Ag loading on the optical properties of chitosan film will be studied in this report. Herein, TiO2/Ag-chitosan composite films were prepared by solution casting method in wet phase separation using potassium hydroxide (KOH) to produce free-standing films. Field emission scanning electron microscopy (FE-SEM) images show the encapsulated TiO2/Ag particles and the agglomeration of TiO2/Ag particles in chitosan which contributes to the absorption intensity and the band-gap energy of composite films. The increase of TiO2/Ag loading in chitosan leads to the increase of the absorbance intensity and the decrease of optical band-gap energy from 5.2 to 4.6 eV. Additionally, the transparency of composite films decreases with the increase of dispersed TiO2/Ag particles.
KeywordsTiO2/Ag composite Chitosan film Wet phase separation Optical properties
- 5.Desiati RD, Taspika M, Sugiarti E (2019) Effect of calcination temperature on the antibacterial activity of TiO2/Ag nanocomposite. Mater Res ExpressGoogle Scholar