摘要
为了探讨纳米材料的尺寸和浓度对其抑菌活性的影响,选用两种尺寸不同的ZnO纳米材料,通过TEM、SEM、XRD和Raman表征纳米材料的形貌、尺寸、晶体结构和化学成分,通过抑菌活性测试比较两种材料的抑菌性能.结果表明,ZnO纳米材料A的尺寸比B小,均属于六方晶系,具有纤锌矿结构,晶体质量良好.抑菌实验表明,两种纳米ZnO材料均对金黄色葡萄球菌和大肠杆菌具有明显的抑制效果,浓度增大,抑菌圈直径也增大,即纳米材料浓度与抑菌效果正相关.浓度相同时,材料A比B显示出更强的抑制作用.相比之下,尺寸小的纳米ZnO材料是更有效的文物保护抑菌剂.
In order to discuss the effect on bacteriostasic activity of size and concentration of nanomate-rials,the morphology,size,crystal structure and chemical composition two ZnO nanomaterial with different sizes were characterized by TEM,SEM,XRD and Raman,the bacteriostasic effect through bacteriostasic activity measurement was estimated.The results showed that ZnO nanoparticles A were smaller than B. Both A and B belong to hexagonal crystal system and wurtzite structure.The bacteriostasic activity measurement over the two ZnO nanomaterials showed obvious bacteriostasic effect on Staphylococcus aureus and Escherichia coli.The higher the concentration,the bigger the diameter of inhibition zone was found.There were positive correlation between size of nanomaterials and bacteriostasic effect.With same concentration,A showed better inhibition effect than B.By comparison,ZnO nanomaterials with smaller size will become effective bacteriostatic agent.
出处
《内蒙古师范大学学报（自然科学汉文版）》
CAS
北大核心
2014年第2期201-205,共5页
Journal of Inner Mongolia Normal University(Natural Science Edition)
基金
北京市科技计划项目(Z121100000312025)
关键词
纳米材料
抑菌活性
尺寸
金黄色葡萄球菌
大肠杆菌
ZnO
ZnO
nanomaterials
bacteriostasic activity
size
Staphylococcus aureus
Escherichia
