▎ 摘　　要

In this work the author proposes doping commercial titanium oxide nanoparticles with graphene and silver nanoparticles to improve their properties. The structural results show that diffraction angles change as crystal size increases from 8.66 nm in commercial titanium oxide nanoparticles to 23.84 nm after doping with graphene and silver nanoparticles. The morphological results show nanostructures like clusters of spherical nanoparticles and a nanosized increase. When graphene and silver nanoparticles were incorporated into the matrix of a commercial sample, the optical properties showed an increase in absorption compared to the undoped sample, and the energy gap decreased from 3.58 to 3.125 eV. The findings of the inhibitory action showed that the growth of Staphylococcus aureus was significantly inhibited, while the growth of Escherichia coli was slightly inhibited. This difference can be explained by the sample's charge, which modifies the attractive and repulsive forces between the sample surface and the cell membrane, leading to larger inhibitory zones for Staphylococcus aureus than for Escherichia coli bacteria. The results of the present work represent a promising step in the field of improving the properties of metal oxides.