Photocatalytic hydrogen production from water using porous material [Ru-2(p-BDC)(2)](n)

We have detected the first example of open porous metal-organic frameworks (MOFs) that functions as an activity site for the reduction of water into hydrogen molecules in the presence of Ru(bpy)(3)(2+), MV2+, and EDTA-2Na under visible light irradiation. This activity is highly efficient: the turnover number based on MOFs and the apparent quantum yield are 8.16 and 4.82%, respectively. Furthermore, this material enables the adsorption of various gases into its pores; its hydrogen uptake capacity is 1.2 wt% at 77.4 K.