Abstract
About this talk
The whole world is facing two major problems. These are water & air pollutions and scarcity of energy resources. Both these problems can be resolved to a greater extent by using an emerging material, a photocatalyst. The problem of water pollution can be solved by photocatalytic material as an oxidant while energy crisis can be solved using it as a reductant. This material has a beauty that it can act as an oxidant as well as a reductant using electron-hole pair generated by its exposure to light. Majority of organic pollutants can be oxidised to small harmless or non-toxic products, while carbon dioxide in the air can be reduced to some synthetic fuels like formic acid, formaldehyde, methanol and methane. The photocatalytic activity of material can be enhanced by doping, composite formation, sensitization, use of co-catalyst, Z-scheme, etc.
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