In this experimental research, TiO2 photocatalyst was manufactured using the TiO2 composite colloids preparation technique, a modification of Su et al’s thin film preparation and coating technique. 31 In the preparation of TiO2 composite colloids, 0.01g of anatase TiO2 nano-powder was dispersed in 100mL of ethanol and PEG solution and continuously stirred with a magnetic stirrer at room temperature for one hour. The solution pH was then adjusted to a pH range of 2-3. The colloid solution was again stirred for another hour at room temperature in a closed chamber with a constant flush of N2 and then left at room temperature in a closed vessel for 24 hours. For the Ag-TiO2 photocatalyst, 0.1%w/w AgNO3 was added along with the ethanol and PEG solution.