Synthesis of Nano-Scale Photocatalyic TiO2 Powder Doped withAg by Sonochemistry Reaction

Abstract

In chemistry, the study of sonochemistry is concerned with understanding the effect of sonic waves and wave properties on chemical systems. In the area of chemical kinetics, it has been observed that ultrasound can greatly enhance chemical reactivity in a number of systems by as much as a million-fold. Nano-technology is a super microscopic technology in which structures of 100 nanometers or smaller can be investigated. This technology has been used to develop <TEX>$TiO_2$</TEX> materials and <TEX>$TiO_2$</TEX> devices of that size. Thus far, electrochemistry methods and photochemistry methods have generally been used to create <TEX>$TiO_2$</TEX> nano-size particles. However, these methods are complicated and create pollutants as a by-product. In the present study, nano-scale silver particles (5 nm) were prepared in a sonochemistry method. Sonochemistry deals with mechanical energy that is provided by the collapse of cavitation bubbles that form in solutions during exposure to ultrasound. <TEX>$TiO_2$</TEX> powders 25 nm in size doped with Ag were formed using an ultrasonic sound technique. The experimental results showed the high possibility of removing pollution through the action of a photocatalyst. This powder synthesis technique can be considered as an environmentally friendly powder-forming processing owing to its energy saving characteristics.