Plasmonic Catalysis for Controlling Selectivity in the Hydrogenation of Cinnamaldehyde to Propylbenzene Under Visible-Light Irradiation.

ABSTRACT: The selective hydrogenation of α,β-unsaturated aldehydes, such as cinnamaldehyde (CAL), into value-added aromatic hydrocarbons like propylbenzene (PPR) remains a formidable challenge due to competing CC and CO hydrogenation pathways. Here, a plasmon-enhanced catalytic strategy employing Au@Au₃Pd core-shell nanoparticles supported on silica is reported. The catalyst features a plasmonic Au core and a 1 nm Au₃Pd alloyed shell (25 at% Pd), enabling light-driven modulation of reaction selectivity. Under visible-light irradiation, the catalyst achieves complete CAL conversion with a ≈34% yield of PPR, corresponding to a 7.7-fold enhancement in turnover frequency relative to dark conditions. Density functional theory calculations reveal that interfacial electronic couplin

SUBMITTER: Frindy S 

PROVIDER: S-EPMC12487739 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature