作　　者： (龙世佳）; (刘妍）; (董小宁）; (唐惠安）; (王晓峰）; (刘岿）;

机构地区： 天水师范学院化学工程与技术学院,甘肃天水741001

出　　处： 《甘肃高师学报》 2017年第6期20-24,共5页

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.

关 键 词： 银纳米粒子 大肠杆菌 抗菌性能