Synthesis of Ag-doped TiO2 nanoparticles coated with carbon nanotubes by the sol–gel method and their antibacterial activities

In this study, raw single-walled carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWCNTs) were chemically treated with sulfuric acid (H2SO4) and nitric acid (HNO3) in a ratio (3:1). These carbon nanotubes (CNTs) have been coated with Ag-doped TiO2 nanoparticles (NPs) by using the sol–gel method. All samples have been studied by X-ray diffraction (XRD), Fourier transform-infrared (FTIR) spectroscopy, UV–vis spectroscopy, field-emission...