Magnetron-sputtered Ag surfaces. New evidence for the nature of the ag ions intervening in bacterial inactivation.

摘要: DC-magnetron sputtering with an Ag target on textile surfaces produced particles sizes ∼4.7 nm (±15%). Sputtering for 15 s led to layers of 15−20 nm. The threshold time precluding airborne bacterial growth was about 60 s. In this case, the coating ∼40−50 thick and cotton loading 0.0026 wt %. particle size did not vary significantly between 600 Only coatings above thickness lead inactivation. Ag/Pt targets times <60 increase bactericide performance samples respect from alone, as expected position Pt in electrochemical series (Galvanic effect). deposition very thin metallic semitransparent gray color coatings. X-ray suggested presence amorphous crystalline species. By photoelectron spectroscopy (XPS), it found that amount oxidized silver ...