Water splitting using a photoactive MOF was first reported by Mori and co-workers in 2009, who demonstrated that visible light driven photocatalytic activity of ruthenium based MOFs (Ru-MOF) can be highly efficient with an apparent quantum yield of 4?82% at 450 nm. While this is a relatively new direction of research, a number of excellent exemplars have emerged in the past
3–4 years,where hydrogen production and photocatalytic reduction have been achieved in MOFs constituting different topologies, porosity levels, metal sites (inorganic clusters), and organic linkers, some of which coupled with postsynthetic modification (PSM)