Our group visualizes a big change in the future of photocatalysis.

Our prototype: Applying TiO₂ on tiles which can be used on building walls

First, the surface area of TiO₂ should be increased to absorb more photoenergy and to enhance efficiency by allowing visible-light to activate the catalyst instead of ultraviolet.  Second, we need to reduce the band-gap energy so that visible light can be used .  Finally, effective methods need to be developed to prevent recombination of e^-/h⁺ pairs.  With these changes, TiO₂ would be able to activate under visible light efficiently.

With these changes, we will be able to use TiO₂ photocatalysts for many uses, as displayed in the following diagram. 

Visible-Light Photocatalysis: A Cleaner Way of Life