Ag-doped antibacterial porous materials with slow release of silver ions

作者：Liu Hairong; Chen Qi^*; Song Li; Ye Reifang; Lu Jianying; Li Huiping

来源：Journal of Non-Crystalline Solids, 2008, 354(12-13): 1314-1317.

DOI：10.1016/j.jnoncrysol.2007.02.098

• biomaterials

The inorganic-organic hybrids of polyethyleneglycol (PEG), tetraethoxysilane (TEOS) and triethyl phosphate (TEP) doped by silver ions were prepared by sol-gel method. After molding and heating at 600 degrees 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 degrees 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 degrees C up to 28 days. Antibacterial experiment showed that such materials treated at 600 degrees C could restrain Escherichia coli effectively.

• 出版日期2008-2-15
• 单位华东理工大学