Immobilization of Highly Dispersed Ag Nanoparticles on Carbon Nanotubes Using Electron-Assisted Reduction for Antibacterial Performance.
Silver nanoparticles (Ag NPs) supported on certain materials have been widely used as disinfectants. Yet, to date, the antibacterial activity of the supported Ag NPs is still far below optimum. This is mainly associated with the easy aggregation of Ag NPs on the supporting materials. Herein, an electron-assisted reduction (EAR) method, which is operated at temperatures as low as room temperature and without using any reduction reagent, was employed for immobilizing highly dispersed Ag NPs on aminated-CNTs (Ag/A-CNTs). The average Ag NPs size on the EAR-prepared Ag/A-CNTs is only 3.8 nm, which is much smaller than that on the Ag/A-CNTs fabricated from the traditional thermal calcination (25.5 nm). Compared with Ag/A-CNTs fabricated from traditional thermal calcination, EAR-prepared Ag/A-CNTs shows a much better antibacterial activity to E. coli/S. aureus and antifouling performance to P. subcordiformis/T. lepidoptera. This is mainly originated from the significantly enhanced Ag(+) ion releasing rate and highly dispersed Ag NPs with small size on the EAR-prepared Ag/A-CNTs. The findings from the present work are helpful for fabricating supported Ag NPs with small size and high dispersion for efficient antibacterial process.
College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China.
Xiaoliang
X
Yan
College of Textile Engineering, Taiyuan University of Technology , Taiyuan 030024, China.
Sha
S
Li
College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China.
Jiehua
J
Bao
College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China.
Nan
N
Zhang
College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China.
Binbin
B
Fan
College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China.
Ruifeng
R
Li
College of Chemistry and Chemical Engineering, Taiyuan University of Technology , Taiyuan 030024 China.
Xuguang
X
Liu
School of Chemistry and Chemical Engineering, Hefei University of Technology , Heifei 230009, China.
Yun-Xiang
YX
Pan
D000900:Anti-Bacterial Agents; D004583:Electrons; D004926:Escherichia coli; D053768:Metal Nanoparticles; D037742:Nanotubes, Carbon; D012834:Silver; D013211:Staphylococcus aureus
D000900:Anti-Bacterial Agents; D037742:Nanotubes, Carbon; D012834:Silver
Ag nanoparticles; antibacterial activity; carbon nanotubes; electron-assisted reduction; plasma