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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 al- ternative fuels and various raw materials for different in- dustries.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 pre- sented.The discussion comprises of photochemical meth- ods for the development of different products,viz.CO, CH_3O_H 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.
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 al- ternative fuels and various raw materials for different in- dustries. 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 pre- sented. The discussion comprises of photochemical meth ods for the development of different products, viz.CO, CH_3O_H 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.