List of Articles Photocatalytic Properties Open Access Article Abstract Page Full-Text 1 - Optimizing the Factors of Color Concentration, pH and the Amount of Nanoparticles in Removal of R198 Reactive Dye under UV Rays by Zinc Oxide Nanoparticles Extracted from Leaching Residue of Zinc Melting Factory S. S. Gojrati M. Hajisafari M. M. Khosravirad Open Access Article Abstract Page Full-Text 2 - Evaluation of Photocatalytic Activity of Fe Doped TiO2 Thin Film Prepared by sol-gel hot dip-coating Sanaz Naghibi Shohreh Vahed Omid Torabi