caa a22 4500 463228146 CHVBK 20180405153233.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10853-007-2109-5 doi (NATIONALLICENCE)springer-10.1007/s10853-007-2109-5 Preparation and antibacterial activities of Ag-doped SiO2-TiO2 composite films by liquid phase deposition (LPD) method [Elektronische Daten] [Bo Sun, Shu-qing Sun, Ting Li, Wen-qin Zhang] In the present study, Ag/SiO2-TiO2 thin films on ceramic tiles with glazed surface were successfully prepared by a liquid phase deposition method (LPD) at a low temperature. The Ag/SiO2-TiO2 thin films obtained were homogenous, well adhered and colored by interference of reflected light. The films were characterized by scanning electron microscopy and X-ray diffraction. From these analysis data, it was found that silver (Ag) nanoparticles were trapped in SiO2-TiO2 matrix. The antibacterial effects of Ag/SiO2-TiO2 thin films against S. aureus and E. coli were examined by the so-called antibacterial-drop test. The bactericidal activity for the above bacteria cells was estimated by relative number of bacteria survived calculated from the number of viable cells which form colonies on the nutrient agar plates. The Ag/SiO2-TiO2 thin films had an excellent antibacterial performance. Atomic absorption spectroscopy (AAS) was used for the quantitative determination of the Ag ion concentration releasing from the Ag/SiO2-TiO2 thin film. The releasing rate of Ag ions from the Ag/SiO2-TiO2 film is 0.123μg/mL during 192h. The antibacterial effect of Ag/SiO2-TiO2 thin film before and after aging in a weathering chamber for 48h was compared and the results show that the antibacterial activity is not compromised after weathering. Springer Science+Business Media, LLC, 2007 Sun Bo Department of Chemistry, College of Science, Tianjin University, Tianjin, China aut Sun Shu-qing Department of Chemistry, College of Science, Tianjin University, Tianjin, China aut Li Ting Department of Chemistry, College of Science, Tianjin University, Tianjin, China aut Zhang Wen-qin Department of Chemistry, College of Science, Tianjin University, Tianjin, China aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/24(2007-12-01), 10085-10089 0022-2461 42:24<10085 2007 42 10853 https://doi.org/10.1007/s10853-007-2109-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-2109-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Bo Department of Chemistry, College of Science, Tianjin University, Tianjin, China aut NATIONALLICENCE 700 1- Sun Shu-qing Department of Chemistry, College of Science, Tianjin University, Tianjin, China aut NATIONALLICENCE 700 1- Li Ting Department of Chemistry, College of Science, Tianjin University, Tianjin, China aut NATIONALLICENCE 700 1- Zhang Wen-qin Department of Chemistry, College of Science, Tianjin University, Tianjin, China aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/24(2007-12-01), 10085-10089 0022-2461 42:24<10085 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer