High-entropy Metal Oxide-polyoxometalate-palladium Sub-1 nm Nanowires for Semi-hydrogenation Reaction of Alkynes

Palladium and palladium-based nanomaterials have shown great catalytic potential in the semi-hydrogenation reaction of alkynes. However, the scarcity of noble metals, harsh reaction conditions, selectivity and over reduction of products limit the development of these kinds of catalysts. It is a smart strategy to fabricate the single-site palladium-based catalyst by introducing palladium into one-dimensional(1D) hybrid sub-1 nm nanowires (SNWs). Herein, we successfully synthesized several kinds of high-entropy metal oxide-polyoxometalate-Pd(HEO-POM-Pd) SNWs, which as the catalysts performed excellent catalytic activity and stereoselectivity in the semi-hydrogenation reaction of alkynes at room temperature, providing a promising avenue to design and prepare noble metal single-site catalysts at the sub-1 nm scale.[Figure not available: see fulltext.]