Light is considered an ideal reagent for environmentally friendly, green photocatalysis. The recent advent of nanotechnology has offered the possibility of carefully tuning the synthesis and properties of nanoparticles to be used as photocatalysts.
Photocatalysis has emerged as an attractive means to promote chemical transformations that are generally performed with expensive chemical treatments. It can contribute to the remediation and degradation of pollutants. Interesting applications are also found in pursuing the synthesis of compounds rather than the degradation and destruction of them.
Further details: Nanoparticles in photocatalysis