吉林大学学报(理学版) ›› 2019, Vol. 57 ›› Issue (04): 985-988.

• 化学 • 上一篇    下一篇

二氧化硅@裸银纳米颗粒微球制备及其对大肠杆菌活性的影响

沈启慧1, 单驿轩1, 刘曼1, 李冬梅1, 刘岩1, 于东冬2, 周建光3   

  1. 1. 吉林化工学院 化学与制药工程学院, 吉林 吉林 132022; 2. 浙江大学 校医院, 杭州 310027;3. 浙江大学 工业控制技术国家重点实验室,  智能系统与控制研究所, 分析仪器研究中心, 杭州 310058
  • 收稿日期:2018-10-31 出版日期:2019-07-26 发布日期:2019-07-11
  • 通讯作者: 刘岩 E-mail:liuyanjlu@126.com

Preparation of Silica@Bare Silver Nanoparticle Microspheresand Their Effects on Activity of Escherichia coli#br#

SHEN Qihui1, SHAN Yixuan1, LIU Man1, LI Dongmei1,LIU Yan1, YU Dongdong2, ZHOU Jianguang3#br#   

  1. 1. Department of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, Jilin Province, China; 2. School Hospital of Zhejiang University, Hangzhou 310027, China; 3. Research Center for Analytical Instrumentation, Institute of CyberSystems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310058, China
  • Received:2018-10-31 Online:2019-07-26 Published:2019-07-11
  • Contact: LIU Yan E-mail:liuyanjlu@126.com

摘要: 以SiO2微球为载体, 利用其表面可自动吸附与还原银离子的能力, 制备新型二氧化硅@银纳米颗粒微球复合材料(SiO2@Ag NPs), 并用透射电镜、 Raman光谱、 X射线光电子能谱等对其进行表征, 测试其对大肠杆菌的抑菌性能. 结果表明: 当SiO2@Ag NPs质量浓度为2.0 mg/mL时, 复合材料的抑菌率为99.8%; 当银纳米颗粒表面含有稳定剂聚乙烯吡咯烷酮时, 其抑菌率降低. 表明稳定剂可保护银纳米颗粒的单分散性, 但不利于其抑菌性的发挥.

关键词: 二氧化硅, 裸银纳米颗粒, 抑菌性, 大肠杆菌

Abstract: The silica microspheres were used as carriers to absorb and reduce silver ions automatically on the surface of microspheres, and a new type of composite material of silica@silver nanoparticle microspheres (SiO2@Ag NPs) was obtained. The silver nanoparticles were characterized by transmission electron microscopy (TEM), Raman spectroscopy and Xray photoelectron s
pectroscopy (XPS), and the bacteriostasis of Escherichia coli was tested. The results show that the antibacterial rate of the composite is 99.8% when the mass concentration of SiO2@Ag NPs is 2.0 mg/mL, and the antibacterial rate decreases when the surface of silver nanoparticles contains stabilizer (polyvinyl pyrrolidone). Therefore, the stabilizer can protect the monodispersity of silver nanoparticles, but it is not conducive to its bacteriostatic effect.

Key words:  , silica, bare silver nanoparticle, antibacterial, Escherichia coli

中图分类号: 

  • O614