Pd Nanocubes@ZIF‐8: Integration of Plasmon‐Driven Photothermal Conversion with a Metal–Organic Framework for Efficient and Selective Catalysis

Abstract

Composite nanomaterials usually possess synergetic properties resulting from the respective components and can be used for a wide range of applications. In this work, a Pd nanocubes@ZIF-8 composite material has been rationally fabricated by encapsulation of the Pd nanocubes in ZIF-8, a common metal-organic framework (MOF). This composite was used for the efficient and selective catalytic hydrogenation of olefins at room temperature under 1 atm H2 and light irradiation, and benefits from plasmonic photothermal effects of the Pd nanocube cores while the ZIF-8 shell plays multiple roles; it accelerates the reaction by H2 enrichment, acts as a "molecular sieve" for olefins with specific sizes, and stabilizes the Pd cores. Remarkably, the catalytic efficiency of a reaction under 60 mW cm(-2) full-spectrum or 100 mW cm(-2) visible-light irradiation at room temperature turned out to be comparable to that of a process driven by heating at 50 °C. Furthermore, the catalyst remained stable and could be easily recycled. To the best of our knowledge, this work represents the first combination of the photothermal effects of metal nanocrystals with the favorable properties of MOFs for efficient and selective catalysis.

Controllable cyanation of carbon-hydrogen bonds by zeolite crystals over manganese oxide catalyst

“…Meanwhile, it is worth noting that the zeolite sheath with micropores might offer a good opportunity for achieving shape-selective catalysis, which is a crucial and an important advantage for heterogeneous catalysts4243444546. To approve this hypothesis, we performed the oxidative cyanation of a mixture of toluene and 1,3,5-trimethylbenzene.…”

Harnessing Solar‐Driven Photothermal Effect toward the Water–Energy Nexus

“…[30] When the incident light frequency can match the inherent oscillation frequency of free electrons within metal surfaces, it will trigger the generation of photoexcited hot electrons, followed by the oscillation with incident electromagnetic field. [32] Benefiting from the achievements in the area of nanoscience and nanotechnology, there have been numerous kinds of metals used as plasmonic photothermal agents so far, such as gold (Au), [33][34][35] silver (Ag), [36] platinum, [37] palladium, [38] and aluminum. [31] On the basis of above interaction mechanism, Orrit and co-workers first reported a plasmonic photothermal effect of nanometer-sized gold particles in 2002.…”

Multifunctional Tubular Organic Cage‐Supported Ultrafine Palladium Nanoparticles for Sequential Catalysis

“…[12] For the purpose of investigating the heterogeneous catalytic activity of as eries of cage-supported Pd NPs,t he hydride reduction of 4-nitrophenol with NaBH 4 was chosen as amodel reaction. [12] For the purpose of investigating the heterogeneous catalytic activity of as eries of cage-supported Pd NPs,t he hydride reduction of 4-nitrophenol with NaBH 4 was chosen as amodel reaction.…”