[Nature Communications] 我室郑南峰教授和傅钢教授发表论文:Atomic overlayer of permeable microporous cuprous oxide on palladium promotes hydrogenation catalysis

发布日期:2022年05月25日   浏览次数:

我室郑南峰教授和傅钢教授在 Nature Communications 上发表论文:Atomic overlayer of permeable microporous cuprous oxide on palladium promotes hydrogenation catalysis

摘要: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 sites on the Cu2O overlayer can be passivated by terminal alkynes, reinforcing the chemical stability of Cu2O and thus the catalytic stability toward hydrogenation. The deep understanding allows us to extend the interfacial sites far beyond the metal/support perimeter and provide new vectors for catalyst optimization through 2D interface interaction.

文章链接:https://www.nature.com/articles/s41467-022-30327-2