Antibacterial glass films prepared on metal surfaces by sol-gel method

作者：Kiraz Nadir^*; Kesmez Omer; Burunkaya Esin; Budama Leyla; Acar Burcin; Asilturk Meltem; Camurlu H Erdem; Arpac Ertugrul

来源：Journal of Sol-Gel Science and Technology, 2010, 56(3): 227-235.

DOI：10.1007/s10971-010-2298-2

• Sol-gel
• Antibacterial coating
• Anti-corrosion coating
• Glassy film
• E. coli

This paper describes the preparation and characterization of glass films consisting of SiO2, Li2O, Na2O, K2O or MgO in varying compositions on stainless steel and aluminum substrates by sol-gel method. Silver phosphate or silver incorporated zeolite was also introduced into the sols for obtaining antibacterial effect. The SiO2/Li2O/Na2O system having the composition of 85:5:10 wt% was found as the optimum for obtaining a stable sol and film formation. The films were investigated by scanning electron microscopy (SEM) and electron dispersive analysis by X-ray (EDX), Fourier transformed infrared (FTIR) spectroscopy, thermo-gravimetric analysis (TGA) and differential thermal analysis (DTA). Homogenous films having 300 +/- A 20 nm thicknesses were formed by spin coating and then by curing at 500 A degrees C for 1 h. Obtained films had high adherence to the metal substrates and they were also durable in acidic, basic or NaCl environments. They also presented a powerful antibacterial effect against E. coli.

• 出版日期2010-12