Influence of Amount of Silver on the Structural and Optical Properties of TiO 2 Powder Obtained by Sol-Gel Method

In this paper five TiO2 powders prepared by sol-gel technique were analyzed being into consideration the modification of method of synthesis applied. As a precursors titanium (IV) buthoxide (TBOT) or titanium (IV) isopropoxide (TIPO) were used. The size of obtained pure TiO2 particles (called in paper TiO2-1 ÷ TiO2-5) was in the range 80-300 nm as it was confirmed by XRD, SEM and AFM techniques. Ag doped TiO2 (abbreviated herein as TiO2-2-Ag-y) was obtained using two methods of synthesis, where different amount of silver was added (1, 5 or 10% w/w). Additionally, the influence of method of the synthesis applied and amount of silver on the UV-vis properties of TiO2 was analyzed.