Synthesis and Morphological Study of Nanoparticles Ag/TiO_2 Ceramic and Bactericidal Investigation of Polypropylene-Ag/TiO_2 Composite

摘要

Antibacterial ceramic consisting silver nanoparticles in TiO_2 (rutile phase) particles were prepared via the chemical deposition route. Structure of synthesized ceramic was characterized using different methods of spectroscopies including; X-ray diffraction (XRD), TEM, and scanning probe microscopy (SPM). The results show that very fine silver particles were loaded on the titania dispersedly and also no crystalline change happened in the TiO_2 structure. In order to preparation of antibacterial composite, ceramic was compounded into polypropylene using a Hakke internal mixer in optimized conditions. Morphology of composite was confirmed by AFM images. Finally, antibacterial activity of composite was studied against Staphylococcus aureus. Results show that the bactericidal effect of this composite is significant and suggesting the composite to be promising candidate for applications in fields.