| 초록 |
The oxidation of small organic molecules has been widely studied owing to fundamental interest and relevance to fuel technology. Among these molecules, formic acid (HCOOH) is a low-toxic chemical that can be easily stored, transferred, and handled. Currently, it was found that among the noble metal catalysts, the activity for the H2 production via HCOOH decomposition is enhanced on Pd catalysts, however, the selectivity to H2 production is still to be improved. To solve such issue, the bimetallic alloy Metal-Pd Core-Shell has been proposed to improve both the catalytic activity and selectivity of Pd toward H2 production from HCOOH decomposition. In this work, we constructed metal core, such as Ir, Pt, Au, Cu, Ag and Rh with the monolayer Pd-Shell, our results indicate that when Pd surface is compressively strained and gained charge from core metals, H2 productivity is increased and at the same time CO production is suppressed. This work hints on the importance of engineering the surface activity of the M-Pd catalysts by the interplay between ligand and strain effects. |
