Cu Nanoclusters Anchored on the Metal–Organic Framework for the Hydrolysis of Ammonia Borane and the Reduction of Quinolines

Abstract

Free-access active sites created and the interaction regulated between them and substrates during the heterogeneous catalysis process are crucial, which remain a great challenge. In this work, in suit reduced to afford naked Cu nanoparticles (NPs) have been anchored on the metal–organic framework (MOF), NH2-MOF, to form Cu-NH2-MOF. The strategy can precisely control the Cu NP formation with small size and uniform distribution. The Cu NP properties and MOF advantages have been integrated to create a great catalyst with multiple functions and have resulted in improving the recyclability and superb catalytic activity for the one-pot reduction of heterocycle reactions under mild conditions. The experimental and theoretical calculation results show that the superior performance should be attributed to the framework of NH2-MOF that provides large caves for substrate enrichment and the stabilization of Cu sites by the −NH2 group.

In situ insertion of copper to form heteroanionic D3h-symmetric [Cu3Mo8O32]10− for a templated Ag55 nanocluster

“…3c, bands centered at 933.13 and 952.88 eV were observed for Cu 2p 3/2 and Cu 2p 1/2 , respectively, attributed to Cu( ii ) coordinating with O. 46,47 The peaks at 232.04 and 235.18 eV, shown in Fig. 3d, can be ascribed to the binding energies of Mo 6+ 3d 3/2 and Mo 6+ 3d 5/2 , respectively.…”

In situ encapsulating cobalt phosphide into a quasi-MOF: a high-performance catalyst for hydrolytic dehydrogenation of ammonia borane

“…The turnover frequency (TOF) of the catalytic reaction is calculated by the following equation: 28 where n Co is the mole number of Co in CoP@quasi-Co-MOF-74 determined by the ICP-AES test.…”

Cobalt-Based Active Sites Embedded in Hollow Porous Carbon Nanocages for the Hydrogenation of Nitroarenes

“…To pursue high-porosity structure materials with superb catalytic performance and to extend our research into the hydrogenation of nitro groups, , in this work, a step-by-step strategy has been applied to fabricate a catalyst of Co/HCS-800 (as demonstrated in Figure ) with Co-based active sites dispersed on hollow carbon nanospheres for hydrogenation of nitroarenes. Catalytic experiments show that Co/HCS-800 possesses a better performance compared with other Co-based catalysts reported previously (Table S1), which allows almost overall conversion into the target product without any byproducts.…”