Synthesis, characteristics, and antibacterial activity of a rare-earth samarium/silver/titanium dioxide inorganic nanomaterials
来源期刊：JOURNAL OF RARE EARTHS2014年第8期
论文作者：吴江 张国梁 刘杰 高蕻冰 宋春香 杜浩然 张丽 巩忠萍 吕玉光
文章页码：727 - 732
摘 要：An inorganic nanomaterials combination of Sm, Ag, and TiO2 was synthesized using supercritical fluid drying（SCFD） combined with sol-gel techniques. The structure, photocatalysis and bacteriostatic activity of the materials were characterized by X-ray diffraction（XRD）, transmission electron microscopy（TEM）, X-ray photoelectron spectroscopy（XRPS）, photocatalytic performance, and antibacterial activity experiments. The XRD results showed that the average particle diameter of Sm/Ag/TiO2 was 14.62 nm and Ag and Sm ions were dispersed on the surface of TiO2 in a highly dispersed, amorphous form. The TEM image showed that the size of the particle was 12 nm using the scherer formula. The XPS result showed that the element Sm was doped and Ag was loaded inorganic nanomaterials successfully. Sm/Ag/TiO2 exhibited optimal photocatalytic properties at 600 oC, the photocatalytic optimal proportion of Sm/Ag/TiO2 was 2:2:100. When the molar ratio was 2:2:100, the bacteriostatic circle diameter was 16 mm for Staphylococcus aureus, the minimum bacteriostatic concentration was 200 μg/mL for white beads coccus, and the minimum bactericidal concentration was 2×104 μg/mL for white beads coccus. The SEM results showed that the antibacterial material attached to the candida albicans cell surface, cells appeared fold deformation. Therefore the inorganic nanomaterials Sm/Ag/TiO2 had high temperature resistance, good photocatalytic and antibacterial characteristics in visible light.
吴江1，张国梁1，刘杰2，高蕻冰3，宋春香3，杜浩然3，张丽3，巩忠萍3，吕玉光3
1. School of Stomatology, Jiamusi University2. Department of Prosthodontics, The Affiliated Hospital of Medical College, Qingdao University3. College of Pharmacy, Jiamusi University
摘 要：An inorganic nanomaterials combination of Sm, Ag, and TiO2 was synthesized using supercritical fluid drying（SCFD） combined with sol-gel techniques. The structure, photocatalysis and bacteriostatic activity of the materials were characterized by X-ray diffraction（XRD）, transmission electron microscopy（TEM）, X-ray photoelectron spectroscopy（XRPS）, photocatalytic performance, and antibacterial activity experiments. The XRD results showed that the average particle diameter of Sm/Ag/TiO2 was 14.62 nm and Ag and Sm ions were dispersed on the surface of TiO2 in a highly dispersed, amorphous form. The TEM image showed that the size of the particle was 12 nm using the scherer formula. The XPS result showed that the element Sm was doped and Ag was loaded inorganic nanomaterials successfully. Sm/Ag/TiO2 exhibited optimal photocatalytic properties at 600 oC, the photocatalytic optimal proportion of Sm/Ag/TiO2 was 2:2:100. When the molar ratio was 2:2:100, the bacteriostatic circle diameter was 16 mm for Staphylococcus aureus, the minimum bacteriostatic concentration was 200 μg/mL for white beads coccus, and the minimum bactericidal concentration was 2×104 μg/mL for white beads coccus. The SEM results showed that the antibacterial material attached to the candida albicans cell surface, cells appeared fold deformation. Therefore the inorganic nanomaterials Sm/Ag/TiO2 had high temperature resistance, good photocatalytic and antibacterial characteristics in visible light.
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