The aim of this research was to develop a novel process of converting carbon dioxide produced at coal fired gasification, coal to liquid fuels and coal fired combustion plants. The investigation explored the possibility of utilizing light energy to convert CO2 to methanol in the presence of a catalyst-coated filter and water at atmosheric conditions. The successful demonstration of the concept resulted in an alternate route to carbon dioxide sequestration and the conversion of an otherwise waste green house gas into a useful chemical feedstock. The study of a photocatalytic reactor for the conversion of carbon dioxide in terms of conversion efficiency for a range of inlet concentrations and ultraviolet light intensities is reported, in addition to an assessment of various catalysts and sensitizers on the semiconductor surface.