以SiO2为模板,采用溶胶-凝胶法合成核壳TiO2@SiO2复合材料,用光沉积法在TiO2@SiO2表面沉积贵金属Ag合成核壳纳米Ag@TiO2@SiO2复合材料.采用透射电镜、X射线衍射、X射线光电子能谱和紫外-可见漫反射光谱进行表征.用罗丹明为目标污染物研究复合材料的光催化性能,测试对金黄色葡萄球菌和大肠杆菌的抑菌性能.结果表明,复合材料Ag@TiO2@SiO2在紫外光的照射下具有较高的催化性能,且当含银浓度为0.6 mg/mL时,复合材料对金黄色葡萄球菌抑菌率为93.41％,对大肠杆菌的抑菌率为97.37％.Ag@TiO2@SiO2具有良好的催化性能和抑菌性能,有望应用于水处理和医疗器械等领域.
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