CrPd nanoparticles on NH2-functionalized metal-organic framework as a synergistic catalyst for efficient hydrogen evolution from formic acid

Ultrafine and well dispersed CrPd nanoparticles are successfully immobilized on NH 2 -functionalized porous metal-organic framework MIL-101 by a facile sequential impregnation-reduction approach. By virtue of the bimetallic synergistic effect between Cr and Pd and the strong metal-support interaction between CrPd nanoparticles and MIL-101-NH 2 support, the resulting Cr 0.4 Pd 0.6 /MIL-101-NH 2 catalyst exhibits excellent catalytic activity for the generation of hydrogen from formic acid, affording an excellent initial turn over frequency value as high as 2009 mol H 2 mol Pd −1  h −1 at 323 K, which is much higher than most of the reported noble metal heterogeneous catalysts for this catalytic reaction under similar conditions.