Abstract
The antibacterial effect of silver can be exploited in
the food and beverage industry and medicinal applications
to reduce biofouling of surfaces. Very small amount of
silver ions are enough to destructively affect the
metabolism of bacteria. Moreover, superhydrophobic
properties could reduce bacterial adhesion to the
surface. In this study we fabricated superhydrophobic
surfaces that contained nanosized silver particles. The
superhydrophobic surfaces were manufactured onto
stainless steel as combination of ceramic nanotopography
and hydrophobication by fluorosilane. Silver
nanoparticles were precipitated onto the surface by a
chemical method. The dissolution of silver from the
surface was tested in an aqueous environment under pH
values of 1, 3, 5, 7, 9, 11 and 13. The pH value was
adjusted with nitric acid and ammonia. It was found that
dissolution rate of silver increased as the pH of the
solution altered from the pH of de-ionized water to lower
and higher pH values but dissolution occurred also in
de-ionized water. The antimicrobial potential of this
coating was investigated using bacterial strains isolated
from the brewery equipment surfaces. The results showed
that the number of bacteria adhering onto steel surface
was significantly reduced (88%) on the superhydrophobic
silver containing coating
| Original language | English |
|---|---|
| Journal | IOP Conference Series: Materials Science and Engineering |
| Volume | 47 |
| DOIs | |
| Publication status | Published - 2013 |
| MoE publication type | A4 Article in a conference publication |
| Event | 2nd International Conference on Competitive Materials and Technological Processes, IC-CMTP 2012 - Miskolc-Lillafüred, Hungary Duration: 8 Oct 2012 → 12 Oct 2012 Conference number: 2 |