Plant-Mediated Synthesis of Ag-Pd Alloy Nanoparticles and Their Application as Catalyst toward Selective Hydrogenation
- 化学化工－已发表论文 
Herein, we reported the green synthesis of Ag-Pd alloy nanoparticles (NPs) using the aqueous extract of the Cacumen platycladi leaves as well as their application as catalyst for hydrogenation of 1,3-butadiene. The biosynthetic NPs were characterized to confirm the nature of alloy by UV-vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and energy dispersive X-ray spectroscopy (EDX). The possible functional groups responsible for the reduction and protection of NPs were identified through Fourier transform infrared spectroscopy (FTIR). The results revealed that biomolecules like saccharides, polyphenols, or carbonyl compounds were related to the reduction process, and the (NH)C=O groups were responsible for the stabilization of the NPs. Furthermore, the as-formed Ag-Pd bimetallic-supported catalysts especially Ag1Pd3/gamma-Al2O3 was found to possess excellent catalytic performance toward hydrogenation of 1,3-butadiene. A butene yield of 84.9% was obtained, which was remarkably enhanced when compared with monometallic counterparts. Moreover, the activity of it maintained stability within 12 h of durable experiments.