Concluding Remarks on: Heterogeneous Photocatalysis at the Gas/Solid Interface

Abstract

Catalysis is undoubtedly playing a role in photochemical reactions involving heterogeneous systems. The role of the solid is very important,

• a) as a sensitizer in many systems whereby holes and electrons can be made available for interaction with adsorbed species;

• b) as a catalyst when such processes as H atom recombination can be facilitated through the reverse spillover effect, and

• c) by acting as a means of concentrating the reactants through adsorption.