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The chemical reduction of CO2 remains a challenge with respect to the reversal of the oxidative degradation of any organic materials.The conversion of CO2 into useful substances is essential in developing altative fuels and various raw materials for different industries.This also aids in preventing the continuous rise in tropospheric temperature due to the green house effect of CO2.In this article an overview of the growth taken place so far in the field of CO2 chemical reduction is presented.The discussion comprises of photochemical methods for the development of different products,viz.CO,CH3OH and CH4,through chemical reduction of CO2.This includes the use of photo catalysts,mainly TiO2,and the role of a hole scavenger(such as 2-propan01) for this purpose.