1 research outputs found
In Situ Synthesis of Core–Shell Pt–Cu Frame@Metal–Organic Frameworks as Multifunctional Catalysts for Hydrogenation Reaction
Controllable integration
of metal nanoparticles (NPs) and metal–organic
frameworks (MOFs) is of significant importance in many applications
owing to their unique properties. In situ efficient synthesis of metal
NPs with different structures into MOFs is a great challenge. Herein,
we report the nanostructures of octahedron and flower Pt–Cu
frame@HKUST-1, which is successfully synthesized under a microwave
irradiation method in only 30 min. In this study, Pt–Cu alloys,
serving as the self-template, are synthesized first, followed by the
HKUST-1 shell growing in situ via the consumption of Cu<sup>0</sup>. As multifunctional catalysts, the core–shell structures
exhibit excellent performance for the hydrogenation of 1-hexene. Notably,
octahedron Pt–Cu frame@HKUST-1 displays high turnover number
(TON) and turnover frequency (TOF) of 1004 and 2008 h<sup>–1</sup>, respectively. Thanks to
the protective effect of HKUST-1, the octahedron Pt–Cu frame@HKUST-1
can be recycled for at least four runs without serious loss of activity
and obvious aggregation of Pt–Cu alloys. Furthermore, the size-selective
catalysis is also well-demonstrated by choosing 1-hexene, <i>cis</i>-cyclooctene, and styrene as substrates