Characterization, Photocatalytic And Antibacterial Properties Of Sm / Ag / TiO 2 In Inorganic Nanomaterials

Objective:The main objective of this experiment was to study the characterization, photocatalytic andantibacterial activities of an inorganic nanomaterials Sm/Ag/TiO2.Methods:1.Characterization analysis(1)Powder XRD analysis of TiO2, Ag/TiO2and Sm/Ag/TiO2at500℃for100min;PowderXRD analysis of Different proportions of Sm/Ag/TiO2at500℃for100min(2)TEM measurements of Sm/Ag/TiO2(3)XPS spectra of Sm/TiO2and Ag/Sm/TiO22.Photocatalytic performance(1) Effect of calcination temperature on the catalytic activity of inorganic nanomaterials(2)Photocatalytic properties of different molar ratios Sm and Ag in TiO23.Antibacterial activity experiments(1) The bacteriostatic ring experiment was to compare different mole ratio of nanometermaterials on the antibacterial activity of staphylococcus aureus under the condition of visiblelight.(2)The molar ratio of Sm/Ag/TiO2was2:2:100, The liquid dilution experiment on the whitebeads coccus was to study the minimum bacteriostatic concentration and the minimumbactericidal concentration.(3)SEM analysis was to observe on the changes of white beads coccus cells.Results:1.Characterization analysis(1)the average particle diameter of Sm/Ag/TiO2was14.62nm；Ag and Sm ions weredispersed on the surface of TiO2in a highly dispersed and amorphous form; thus, the intensitywas stronger.(2)The image shows that the size of the particle was12nm using the scherer formula。 (3)The result was shown that the element Sm was doped and Ag was loaded inorganicnanomaterials successfully。2.Photocatalytic performance(1)Sm/Ag/TiO2exhibited optimal photocatalytic properties at600℃.(2)The photocatalytic optimal proportion of Sm/Ag/TiO2was2:2:100.3.Antibacterial activity experiments(1)when the optimal mole ratio is2:2:100, the bacteriostatic circle diameter was16mm.(2)The minimum bacteriostatic concentration was200μg/ml;the minimum bactericidalconcentration was2×104μg/ml.(3)The SEM results were shown that the antibacterial material attached to the candida albicanscell surface, cells appear fold deformation.Conclusion:The inorganic nanomaterials Sm/Ag/TiO2had high temperature resistance, goodphotocatalytic and good antibacterial characteristics.