Splitting water into hydrogen and oxygen using solar energy is the simplest approach to produce renewable fuels. However, a major drawback of these reactions is their slow kinetics and the subsequent storage of hydrogen. For this reason, this project studies the synthesis of polyoxometalates, metal-organic networks, covalent organic networks and materials based on lamellar double hydroxides to be used on the one hand, as reaction catalysts and, on the other, for the storage of the generated hydrogen.