摘要
采用化学还原和晶种诱导结合法制备银纳米粒子,并用紫外-可见分光光度计(UVvis)和透射电子显微镜(TEM)对所制备的银纳米粒子进行表征;用大肠杆菌为受试菌株进行药敏实验,采用纸片法通过比较抑菌圈大小测试了不同浓度银纳米粒子的抗菌性能.结果表明单分散的、平均粒径约为15nm的准球形银纳米粒子对埃希氏大肠杆菌(E.coli)具有明显的抗菌作用,且抗菌效果随着纳米粒子浓度的增加而增强.
The thesis is mainly about preparing silver nano-particles by means of combining chemical reduction with the seed crystal induction, the prepared silver nano-particles are characterized by UV-Vis and TEM. Drug sensitive experiment is made by using Es- cherichia coli as the test strains, and the paper method is used to test the antibacterial properties of silver nanoparticles under differ- ent concentrations through comparing the bacteriostatic ring size. Results showed that the synthesized silver nanoparticles of the di- ameter around 15nm with monodispersity have obviously antibacterial activities against E coli, and the antibacterial effect is stronger with the increase of silver nanoparticles concentrations.
出处
《甘肃高师学报》
2017年第6期20-24,共5页
Journal of Gansu Normal Colleges
基金
甘肃省教育厅项目"金银核壳纳米复合材料的形貌可控制备及形成机理研究"(2014A-103)
天水师范学院科研资助项目"超疏水性功能材料的制备及其应用研究"(TSA1309)
2016年度天水师范学院教研资助项目"高师院校化学实验教学中学生创新思维能力和学习迁移能力的培养"(SYJY2016Y24)
关键词
银纳米粒子
大肠杆菌
抗菌性能
silver nanoparticles
escherichia coli
mold resistance
