Water Radiolysis: Influence of Oxide Surfaces on H2 Production under Ionizing Radiation

The radiolysis of water due to ionizing radiation results in the production of electrons, H-center dot atoms, (OH)-O-center dot radicals, H3O+ ions and molecules (dihydrogen H-2 and hydrogen peroxide H2O2). A brief history of the development of the understanding of water radiolysis is presented, with a focus on the H-2 production. This H-2 production is strongly modified at oxide surfaces. Different parameters accounting for this behavior are presented.