摘要
利用简单的一步法合成Ag@SiO2复合纳米微粒,并对其样品进行了TEM,HRTEM,XRD和UV表征.结果表明银纳米粒子成功包覆于二氧化硅微球之中,且壳层呈多孔状结构.以二倍稀释法测试了Ag@SiO2纳米颗粒对金黄色葡萄球菌、绿脓杆菌和大肠杆菌的最小抑菌质量浓度以及最小杀菌质量浓度,结果表明Ag@SiO2纳米颗粒具有良好的抗菌持久性能,并且对革兰氏阴阳两种细菌具有良好的杀菌选择性.
Core-shell structured Ag@SiO2 nanocomposites have been synthesized by a simple chemical method and characterized by transmission electron microscopy（TEM）,high-resolution transmission electron microscopy（HRTEM）,X-ray powder diffraction（XRD）,and ultraviolet adsorption（UV）.The results indicated that silver nanoparticles were coating in silica nanospheres and the silica shells possess porous structure.The minimal inhibitory concentration（MIC） and minimal bactericidal concentration（MBC） of Ag@SiO2 nanocomposites against Staphylococcus aureus（S.aureus）,Escherichia coli（E.coli） and Pseudomonas aeruginosa（P.aeruginosa） were tested using the popular twofold serial dilution method.The antibacterial results demonstrated that the Ag@SiO2 composite nanoparticles possess good durable antibacterial properties and selectivity.
出处
《河南大学学报（自然科学版）》
CAS
北大核心
2012年第2期139-143,共5页
Journal of Henan University:Natural Science
基金
国家自然科学基金资助项目(NO.20671029)
省部共建基金资助项目(NO.SBGJ090515)
