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Mingshang Jin and his research group successfully constructed Pd-based bimetallic alloy surfaces for their improved catalytic performance toward a set of hydrogenation reactions
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A new approach by Mingshang Jin’s research group at Xi’an Jiaotong University based on combining slow-reduction and surface diffusion of atoms is offering new thinking to the construction of high efficient metal catalysts. These research works have been published in Materials Horizons (IF: 10.706) and Nano Research (7.354). The titles of these works are “Construction of Au-Pd alloy shells for enhanced catalytic performance toward alkyne semihydrogenation reactions” and “Construction of Pd-M (M = Ni, Ag, Cu) alloy surfaces for catalytic applications”.
Designing the surface structure of catalysts has been regarded as the key in heterogeneous catalysis for achieving high activity and selectivity. Semihydrogenation of alkynes to alkenes is an industrially important reaction, in which, Pd surfaces have been long served as the active part of catalysts for this process. However, poor selectivity on Pd surfaces makes it necessary to modify its surface structure. In this work, we have developed a new and versatile “surface alloy approach”, to modify the surface of palladium nanocrystals with gold atoms. In the synthetic protocol, M (second metal) ions was introduced and reduced on the surface of Pd nanocubes, which can subsequently diffuse into the lattice of Pd upon heating, leading to the formation of the Pd-M alloy surfaces. To our best knowledge, there has not been any report in literature on the direct surface alloying of metal nanocrystals. These Pd-M alloy surfaces can exhibit significantly enhanced catalytic activity and selectivity compared with commercial catalysts.

Jin was born in Zhejiang, China, in 1984. He received his BS degree in Chemistry (2006) and PhD degree in Physical Chemistry (2012) from Xiamen University (with Prof. Zhaoxiong Xie). He spent two years in Prof. Younan Xia’s group as a visiting graduate student from 2009-2011. At the beginning of 2012, he joined Xi’an Jiaotong University, China. His research interests include the rational design and synthesis of metal nanomaterials for applications in fuel cells, catalytic converters, organic catalysis. By far, he has published over 50 papers in high-impact SCI journals, with an h-index of 23.

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