Atomic overlayer of permeable microporous cuprous oxide on palladium promotes hydrogenation catalysis.

ABSTRACT: The interfacial sites of metal-support interface have been considered to be limited to the atomic region of metal/support perimeter, despite their high importance in catalysis. By using single-crystal surface and nanocrystal as model catalysts, we now demonstrate that the overgrowth of atomic-thick Cu₂O on metal readily creates a two-dimensional (2D) microporous interface with Pd to enhance the hydrogenation catalysis. With the hydrogenation confined within the 2D Cu₂O/Pd interface, the catalyst exhibits outstanding activity and selectivity in the semi-hydrogenation of alkynes. Alloying Cu(0) with Pd under the overlayer is the major contributor to the enhanced activity due to the electronic modulation to weaken the H adsorption. Moreover, the boundary or defective sit

SUBMITTER: Liu K 

PROVIDER: S-EPMC9095604 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature