文献类型：期刊文献

英文题名：Ag-doped antibacterial porous materials with slow release of silver ions

作者：Liu, Hairong[1]; Chen, Qi[1]; Song, Li[1]; Ye, Reifang[2]; Lu, Jianying[1]; Li, Huiping[1]

机构：[1] Department of Inorganic Materials, East China University of Science and Technology, Shanghai, 200237, China; [2] Department of Microbiology, East China University of Science and Technology, Shanghai, 200237, China

年份：2008

卷号：354

期号：12-13

起止页码：1314

外文期刊名：Journal of Non-Crystalline Solids

收录：EI(收录号：20080611081074)

语种：英文

外文关键词：Differential thermal analysis - Doping (additives) - Metal ions - Polyethylene glycols - Porous materials - Silanes - Silver - Sol-gel process - Thermogravimetric analysis

摘要：The inorganic-organic hybrids of polyethyleneglycol (PEG), tetraethoxysilane (TEOS) and triethylphosphate (TEP) doped by silver ions were prepared by sol-gel method. After molding and heating at 600 °C to remove organic components, porous Ag-P2O5-SiO2 monoliths were obtained. Thermogravimetry (TG), differential thermal analysis (DTA), infrared spectra, ultraviolet-visible (UV-vis) spectra and pore structure of the samples were measured to show that organic components and residual water could be removed by a heat-treatment up to 600 °C and the mesopores with 6 nm pore diameter were formed. Specific surface area and pore volume of the samples were adjusted with different contents of TEP in the starting composition. Ag+ ions could be stably released into water at 30 °C up to 28 days. Antibacterial experiment showed that such materials treated at 600 °C could restrain Escherichia coli effectively. ? 2007 Elsevier B.V. All rights reserved.