Abstract: Aluminum specimens were anodized in a sulfuric acid bath, then silver was electrodeposited
in poresof the anodized aluminum by using alternating current . The anodized aluminum with
deposited silver was testedfor its antibacterial performance. The results show that the
antibacterial rates of the specimens are above 95%against the growth of E. coli, P.
aeruginasa, S. faecalis and S. aureus. The morphology of the silver in pores ofanodized
aluminum is characterized by transmission electron microscopy, and the micrographs indicate
that silveris assembled in the form of nanowires with a diameter of 10 nm or 25 nm. The
nanowires have a structure of parallelbright stripes alternating with parallel dark
stripes.

Key words: electrodeposition, antibacteria, aluminum anodic oxide, nanowires

摘要： Aluminum specimens were anodized in a sulfuric acid bath, then silver was electrodeposited
in poresof the anodized aluminum by using alternating current . The anodized aluminum with
deposited silver was testedfor its antibacterial performance. The results show that the
antibacterial rates of the specimens are above 95%against the growth of E. coli, P.
aeruginasa, S. faecalis and S. aureus. The morphology of the silver in pores ofanodized
aluminum is characterized by transmission electron microscopy, and the micrographs indicate
that silveris assembled in the form of nanowires with a diameter of 10 nm or 25 nm. The
nanowires have a structure of parallelbright stripes alternating with parallel dark
stripes.

关键词: electrodeposition;antibacteria;aluminum anodic oxide;nanowires