Global warming, the most threatening problem to be solved by the scientists to meet the Kyoto Protocol of the United Nations Framework Convention on Climate Change and to conserve the rapidly exhausting fuel reserves, stimulated the current research towards artificial photosynthesis. It is an undeniable fact that carbon dioxide accounts for the largest share of the world s greenhouse gas emissions by its alarming increase in the atmosphere. From this standpoint, the development methods to convert carbon dioxide to more useful organic compounds inexpensively is highly desirable. Photocatalytic...