Cu/Cu_xS‐Embedded N,S‐Doped Porous Carbon Derived in Situ from a MOF Designed for Efficient Catalysis

Abstract

The reasonable design of the precursor of a carbonbased nanocatalyst is an important pathway to improve catalytic performance. In this study, a simple solvothermal method was used to synthesize [Cu(TPT)(2,5-tdc)] • 2H 2 O (Cu-MOF), which contains N and S atoms, in one step. Further insitu carbonization of the Cu-MOF as the precursor was used to synthesize Cu/Cu x S-embedded N,S-doped porous carbon (Cu/Cu x S/NSC) composites. The catalytic activities of the prepared Cu/Cu x S/NSC were investigated through catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). The results show that the designed Cu/Cu x S/NSC has exceptional catalytic activity and recycling stability, with a reaction rate constant of 0.0256 s À 1 , and the conversion rate still exceeds 90 % after 15 cycles. Meanwhile, the efficient catalytic reduction of dyes (CR, MO, MB and RhB) confirmed its versatility. Finally, the active sites of the Cu/Cu x S/NSC catalysts were analyzed, and a possible multicomponent synergistic catalytic mechanism was proposed.

2-Methylimidazole-modulated 2D Cu metal–organic framework for 5-hydroxymethylfurfural hydrodeoxygenation

“…7); however, due to the similar binding energy, Cu 0 and Cu + cannot be distinguished in the 2p spectrum. 54 The Auger spectra of Cu were used to confirm the chemical valence states of Cu in the above materials. The signals at ∼568.0 eV and ∼570.0 eV can be observed in the diagrams (Fig.…”

Three-dimensional flower-like Ni–S/Co-MOF grown on Ni foam as a bifunctional electrocatalyst for efficient overall water splitting

“…According to the reports, surface sulfur (S) doping of transition metal hydroxides would be beneficial for improving the conductivity of the catalyst. 31 Moreover, the synergistic effect between the S and OH ligands can effectively adjust the electronic structure, thereby optimizing the binding energies of the OER intermediates and improving the OER activity. 32…”

Hourglass-Type Polyoxometalate-Based Crystalline Material as an Efficient Proton-Conducting Solid Electrolyte

“…However, a MOF usually possesses poor stability in aqueous solution . It is necessary to develop develop new proton-conducting materials that are water stable, are chemically stable, and have a high proton conduction …”

“…12 It is necessary to develop develop new proton-conducting materials that are water stable, are chemically stable, and have a high proton conduction. 13 Polyoxometalate (POM) anions, which consist of welldefined transition-metal oxide nanoclusters with abundant oxygen surfaces, have received considerable attention in catalysis, optics, magnetism, and proton conductors due to their numerous stable structures and potential practical value. 14−20 Especially, as an important member of the polyoxomolybdate family, hourglass-type molybdophosphate hybrids consisting of two [P 4 Mo 6…”