摘要
以硝酸银为原料,柠檬酸钠为表面修饰剂,抗坏血酸或硼氢化为还原剂,在室温下合成出了黄色、紫色和蓝色的3种纳米银胶。透射电子显微镜表征表明黄色纳米银胶中主要是形状不规则的纳米银颗粒;紫色纳米银胶中主要是小尺寸三角形纳米银片和纳米银颗粒;蓝色纳米银胶中主要是大尺寸的三角形纳米银片。采用大肠杆菌为抗菌对象,详细研究了3种纳米银胶对大肠杆菌的抗菌作用。结果表明:3种纳米银胶均具有良好的抗菌作用。其中,纳米银颗粒的抗菌作用最佳,其次是小尺寸纳米银片,大尺寸纳米银片的抗菌作用最弱。分析认为不同形貌纳米银抗菌作用与其活性和比表面积等有关。
Three kinds of silver colloids with colors of yellow,purple,and blue,respectively,were synthesized at room temperature with silver nitrate as raw material,sodium citrate as surface modifier,ascorbic acid or borohydride as reducing agent.Transmission electron microscopy(TEM)results demonstrated that there were irregular silver nanoparticles,small triangular silver nanoplates and nanoparticles,and large triangular silver nanoplates in the yellow,purple and blue silver colloids,respectively.In order to reveal the three kinds of silver colloids antibacterial substance,escherichia coli as antimicrobial object was used.The experimental results showed that three kinds of silver colloids had good antibacterial properties.Among them,the antibacterial property of silver nanoparticles was the best,followed by small silver nanoplates,and the antibacterial property of large silver nanoplates was the weakest.The antibacterial properties of silver nanostructures with different morphologies were related to the activity and specific surface area of silver nanostructures.
作者
牟登科
周欢森
钟建军
贾晓菲
冯敏玲
赵玉珍
王悦辉
Mou Dengke;Zhou Huansen;Zhong Jianjun;Jia Xiaofei;Feng Minling;Zhao Yuzhen;Wang Yuehui(Department of Materials and Food,University of Electronic Science and Technology of China Zhongshan Institute,Zhongshan 528402;Zhongshan Agricultural Products Quality Supervision and Inspection Institute,Zhongshan 528405;Department of Materials Science and Engineering,Tsinghua University,Beijing 100086)
出处
《化工新型材料》
CAS
CSCD
北大核心
2020年第7期93-95,99,共4页
New Chemical Materials
基金
国家自然科学基金(61671140)
中山市科技计划项目(2018SYF10)。
关键词
纳米银胶
形貌
抑菌
最低抗菌浓度
nano-silver colloid
morphology
antibacterial property
minimum antibacterial concentration
