Antimicrobial active silver nanoparticles and silver/polystyrene core-shell nanoparticles prepared in room-temperature ionic liquid

作者：An Jing; Wang Desong^*; Luo Qingzhi; Yuan Xiaoyan

来源：Materials Science & Engineering C-Materials for Biological Applications, 2009, 29(6): 1984-1989.

DOI：10.1016/j.msec.2009.03.015

• Silver nanoparticles
• Polystyrene
• Core-shell nanoparticles
• Ionic liquid
• Antimicrobial activity

Uniform silver nanoparticles and silver/polystyrene core-shell nanoparticles were successfully synthesized in a room temperature ionic liquid, 1-n-butyl-3-methylimidazolium tetra fluoroborate ([BMIM]center dot BF(4)). [BMIM]center dot BF(4) plays a protective role to prevent the nanoparticles from aggregation during the preparation process. Transmission electron micrographs confirm that both silver nanoparticles and core-shell nanoparticles are regular spheres with the sizes in the range of 5-15 nm and 15-25 nm, respectively. The X-ray diffraction analysis reveals the face-centered cubic geometry of silver nanoparticles. The as-prepared nanoparticles were also characterized by Fourier transform infrared spectroscopy, Raman spectroscopy, UV-vis diffuse reflectance spectroscopy and X-ray photoelectron spectroscopy. In addition, antimicrobial activities against E. coli and S. aureus were studied and the results show that both silver nanoparticles and core-shell nanoparticles possess excellent antimicrobial activities. The antimicrobial mechanism of the as-prepared nanoparticles was discussed.

• 出版日期2009-8-1
• 单位天津大学; 河北科技大学