Abstract

The chemical reduction of CO 2 remains a challenge with respect to the reversal of the oxidative degradation of any organic materials. The conversion of CO 2 into useful substances is essential in developing alternative 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 CO 2. In this article an overview of the growth taken place so far in the field of CO 2 chemical reduction is presented. The discussion comprises of photochemical methods for the development of different products, viz: CO, CH 3OH and CH 4, through chemical reduction of CO 2. This includes the use of photo catalysts, mainly TiO 2, and the role of a hole scavenger (such as 2-propanol) for this purpose.

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