Preparation of Silica Radiation Pore and Its Application as Antimicrobial Carrier

来源 :武汉理工大学学报(材料科学版)(英文版) | 被引量 : 0次 | 上传用户:wk8954642
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Hollow silica nanospheres with radical pore on the surfaces were prepared using the assemblies of valine amphiphilic small molecule and benzene as double-templates through sol-gel method in tetramethylammonium hydroxide (25wt%) solution at the stirring rate of 1 000 rpm. There are a lot of vertical pores on the surfaces of the hollow spheres after removing the templates in Muffle furnace at 550 ℃ for 5 h. The sample was characterized using field-emission scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller (BET), X-ray diffraction, etc. The diameter, the vertical pore size of the nanospheres and the BET surface areas are 30-100 nm, 4.2 nm, and 570.5 m2/g, respectively. Because the high porosity and specific surface area, this kind of hollow sphere is the excellent antimicrobial carrier. The antibacterial activities of the silica nanospheres were evaluated by using a bacterial growth inhibitory assay. The experimental results show that the silica hollow spheres loaded with Ag+ have a good bactericidal effect.
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