From a socioeconomic point of view, water splitting is one of the most interesting photocatalytic reactions to generate solar fuels. This reaction exclusively needs sunlight and water to produce hydrogen. However, due to its high energy requirement, it is necessary to develop efficient photocatalysts. Recently, Metal-Organic Frameworks (MOFs) have been proposed as water splitting photocatalysts, requiring their combination with others co-catalyst (i.e. noble metals or metal oxides).
The Advanced Porous Materials Unit of IMDEA Energy Institute has developed a new MOF based on a phosphonate ligand and Ni(II) (branded as IEF-13 from IMDEA Energy Framework*). This material exhibits a bidimensional structure with open metal sites, being able to efficiently photocatalyze the water splitting reaction in absence of any co-catalyst. Further, IEF-13 shows a high stability, insuring its reuse without losing its activity.
(*) Pablo Salcedo-Abraira, Sérgio M. F. Vilela, Artem A. Babaryk, María Cabrero-Antonino, Pedro Gregorio, Fabrice Salles, Sergio Navalón, Hermenegildo García and Patricia Horcajada Nickel phosphonate MOF as efficient water splitting photocatalyst. NanoResearch 2021, 14, 450-457 DOI: 10.1007/s12274-020-3056-6
More information: Patricia Horcajada, Senior researcher and Head of the Advanced Porous Materials Unit, email@example.com
Schematic representation of the water splitting reaction using IEF-13