摘要：The study of Polystyrene (PS) Photolysis was conducted using a mixture ofPS-TiOz/SiO/Ru com- posite. The photolysis was under sunlight conditions with 6.35-5.00 kWh/m?/day for 288-hour exposure; in Hail region KSA. The photocatalysis was pre- pared by impregnation method with ratios TiO225%, Si02 75% and Ru 0.2%. Two types of samples photodegradation were applied on it; standard sam- ples (STD) and municipal waste residues samples(MWR). The degradation efficiency % improved by doubling the amount of photocatalyst. MWR sam- ples showed higher degradation efficiency % thanSTD samples. The degradation efficiency was con- firmed by FTIR analysis, weight-loss % and Polar- ized Light Microscopy (PLM). FTIR showed a considerable decrease in the intensity of aromatic peaks at 751, 698 cm-l and an increase in the intensi- ties for phenyl-C-O at 2352 cm' land O-H peaks at 3776 cm-l. The XRD and SEM characterization for TiO /SiO2/Ru composite shows an amorphous struc- ture, with a particle size of 12.4-23.7 nm. EDX anal- ysis shows an atomic weight % for Si02: 79.81, TiO2: 16.76 and Ru203: 3.43 at. %. Calculating the energy gap (Eg) for the TiO2/SiO2/Ru composite was by us- ing emission wavelengths at = 363, 378, 406, 438, and 463 nm giving E, = 3.42. 3.28. 3.06. 2.82 and 2.68 eV respectively.
关键词：Doped titanium dioxide;Solid phase;Energy gap;Polar-
ized light microscopy;Methylene Blue
