Nonequilibrium carrier–driven hydrogen spillover enables selective alkyne semihydrogenation. (IMAGE)
Caption
Nonequilibrium carrier–driven hydrogen spillover enables selective alkyne semihydrogenation. Schematic illustration of the antenna–reactor photocatalytic mechanism. Under visible light irradiation, plasmonic Au nanoparticles generate nonequilibrium charge carriers that promote H₂ dissociation at adjacent Pd single-atom sites supported on carbon nitride. The resulting active hydrogen species spill over onto the Au surface, where phenylacetylene (PA) is selectively converted to styrene (Sty). Spatial decoupling of hydrogen activation and hydrogenation suppresses over-hydrogenation and enables high activity and selectivity under ambient conditions.
Credit
Aonan Zhu, Ning Zhao, et al.
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