Effect of calcination temperature on the antibacterial activity of TiO₂/Ag nanocomposite

Synthesis of Electrospun PAN/TiO2/Ag Nanofibers Membrane As Potential Air Filtration Media with Photocatalytic Activity

“… 27 − 31 After TiO 2 and Ag are added, there are significant changes including two new peaks at 663 cm –1 related to the lattice vibration of TiO 2 (Ti—O stretching) 32 and at ∼1300 cm –1 for TiO 2 —Ag bonding. 32 − 34 Accordingly, the broad peak at 1335 cm –1 is attributed to TiO 2 —Ag bonding, which indicates that the Ag and TiO 2 have been successfully deposited in the PAN nanofiber membrane. A new broad peak at 3427 cm –1 on PAN/TiO 2 /Ag is attributed to the stretching vibration of the −OH due to the absorption of water molecules and CO 2 from the air.…”

“…The peaks between 500 and 1000 cm –1 on the PAN/TiO 2 /Ag nanofiber membrane are from TiO 2 . The PAN nanofiber membrane shows characteristic peaks for the stretching vibration of the nitrile group (CN) at 2242 cm –1 and the weak ether peak (COC) at 1078 and 1260 cm –1 . , The peaks at 1360, 1450, 1624, 2870, and 2930 cm –1 correspond to the vibration of aliphatic CH groups, which also originate from PAN molecules. − After TiO 2 and Ag are added, there are significant changes including two new peaks at 663 cm –1 related to the lattice vibration of TiO 2 (TiO stretching) and at ∼1300 cm –1 for TiO 2 Ag bonding. − Accordingly, the broad peak at 1335 cm –1 is attributed to TiO 2 Ag bonding, which indicates that the Ag and TiO 2 have been successfully deposited in the PAN nanofiber membrane. A new broad peak at 3427 cm –1 on PAN/TiO 2 /Ag is attributed to the stretching vibration of the −OH due to the absorption of water molecules and CO 2 from the air .…”

Photocatalytic and bactericidal properties and molecular docking analysis of TiO2nanoparticles conjugated with Zr for environmental remediation

“…Both the crystal structure and shape of TiO 2 NPs are the most important factors that affect their physicochemical properties, and therefore their antimicrobial behavior. 54,55 With respect to crystal structure, anatase exhibits the highest photocatalytic and antimicrobial activity. Some works have shown that anatase structure can produce OHc radicals in a photocatalytic reaction, and as explained above, bacteria wall and membranes are effectively terminated.…”

Ag-enriched TiO2 nanocoating apposite for self-sanitizing/ self-sterilizing/ self-disinfecting of glass surfaces

“…was ascribed to Ag–Ti–O bond [ 44 , 45 ]. A band appearing at 1456 cm −1 relates to asymmetric bending vibration of C–H bond and may be explicated as some residual/pollutant organic matter present in the NCs [ 46 ].…”