单分散球形纳米银粒子的制备新方法及其抗菌性能

稀有金属材料与工程, 2008, 37(9): 1669-1672.

单分散球形纳米银粒子的制备新方法及其抗菌性能

徐光年 ^1, , 乔学亮 ^2, , 邱小林 ^3, , 陈建国 ^4,

1.华中科技大学,湖北,武汉,430074;皖西学院,安徽,六安,237012

2.华中科技大学,湖北,武汉,430074

3.南昌理工学院,江西,南昌,330013

4.华中科技大学,湖北,武汉,430074

基金项目: 安徽省教育厅自然科学基金(KJ20078161)

关键词：银氨络离子 , 光电子 , 还原 , 纳米银 , 抗菌

New Method about the Preparation of Single Dispersion Spheric Silver Nanoparticles and Its Antibacterial Property

通过紫外光照射[Ag(NH3)2]+溶液激发光电子还原Ag+为单质银,不添加任何还原剂,在PVP的保护下形成纳米银溶胶.UV-Vis吸收光谱测试表明,胶态的纳米银粒子的吸光度随紫外照射时间的延长而增加,但最大吸收波长不变,当照射时间达12 h时,吸光度值趋于稳定.TEM观测结果表明,纳米银粒子的形状为球形、单分散、粒径5 nm左右.抗菌性能测试表明,当纳米银粒子浓度为5μg/mL时,对大肠杆菌的杀灭率达100%.

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单分散球形纳米银粒子的制备新方法及其抗菌性能

New Method about the Preparation of Single Dispersion Spheric Silver Nanoparticles and Its Antibacterial Property

参考文献