الفهرس 
Introduction and overviewOnly 14 pages are availabe for public view
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Abstract
In this thesis, graphitic carbon nitride (g-C3N4) as one of the semiconductor materials, was prepared in the nano-size using the thermal polymerization technique. The starting materials for graphitic carbon nitride (g-C3N4) preparation was urea. Doping using different dopants (bismuth subcarbonate, bismuth molybdate) was made for modification of graphitic carbon nitride (g-C3N4) and improve its properties. Different ratios of each dopant were prepared and the photocatalytic activity of all the prepared ratios was tested by the application on Rhodamine B dye (cationic dye) as examples for organic pollutants under ultraviolet lamp. The most active ratio was chosen to be compared with graphitic carbon nitride (g-C3N4) before doping with respect to their physicochemical characterizations. Physicochemical characterizations were characterized using different techniques such as X-ray diffraction, Nitrogen gas adsorption at low temperatures, High resolution transmission electron microscope, HRTEM. Photo luminance, PL, Diffuse Reflectance Spectra DRS.