Two-dimensional conducting MOF electrode activates molecular oxygen to generate singlet oxygen for non-free radical dominated water purification

Chemical Engineering Journal, Год журнала: 2025, Номер 507, С. 160865 - 160865

Опубликована: Фев. 20, 2025

Язык: Английский

---

Cu(II) Metal–Organic Framework as a Recyclable Heterogeneous Catalyst for Substituted Pyridine Synthesis from Cyclic Ketones with Propargylamine

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

The creation of efficient and stable metal-organic framework (MOF) catalysts with coordinatively unsaturated metal sites is critical in modern organic synthesis. Herein, we reported one new Cu(II)-MOF the chemical formula {[Cu(L)(H2O)]·2DMA·H2O}∞ (1) (H2L = 4,4'-((4R,5R)-4,5-diphenylimidazolidine-1,3-diyl)dibenzoic acid) for annulation cyclic ketones propargylamine. Compound 1 possesses a 2-fold interpenetrating 3D kagome net channel opening about 20 Å diameter. Framework 1' exhibits high permanent porosity (778 m2/g, BET) recyclable catalytic activity propargylamine one-pot tandem reaction, affording series substituted pyridines good yield. X-ray photoelectron spectroscopy analysis indicates that Cu(II) reduced to active Cu(I) species reaction system, while selectively activate triple bond promote annulation. successful preparation heterogeneous presents opportunities developing highly Cu or other transformations mediated by Cu.

Язык: Английский

---

Conductive Metal–Organic Frameworks and Their Electrocatalysis Applications

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Март 9, 2025

Recently, electrically conductive metal–organic frameworks (EC-MOFs) have emerged as a wealthy library of porous with unique properties, allowing their use in diverse applications energy conversion, including electrocatalysis. In this review, the electron conduction mechanisms EC-MOFs are examined, while electrical conductivities considered. There been various strategies to enhance MOFs ligand modification, incorporation conducting materials, and construction multidimensional architectures. With sufficient being established for EC-MOFs, there extensive pursuits electrocatalysis applications, such hydrogen evolution reaction, oxygen reduction N2 CO2 reaction. addition, computational modeling also exerts an important impact on revealing synthesis–structure–performance relationships. Finally, prospects current challenges discussed provide guidelines designing promising framework materials.

Язык: Английский

---

Highly Ordered Conductive Metal‐Organic Frameworks with Chemically Confined Polyoxometalate Clusters: A Dual‐Functional Electrocatalyst for Efficient H₂O₂ Synthesis and Biomass Valorization

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

Abstract The design of bifunctional and high‐performance electrocatalysts that can be used as both cathodes anodes for the two‐electron oxygen reduction reaction (2e − ORR) biomass valorization is attracting increasing attention. Herein, a conserved ligand replacement strategy developed synthesis highly ordered conductive metal‐organic frameworks (Ni‐HITP, HITP = 2, 3, 6, 7, 10, 11‐hexaiminotriphenylene) with chemically confined phosphotungstic acid (PW 12 ) nanoclusters in nanopores. newly formed Ni−O−W bonds resultant Ni‐HITP/PW modulate electronic structures Ni W sites, which are favorable cathodic 2e ORR to H 2 O production anodic 5‐hydroxymethylfurfural oxidation (HMFOR) 5‐furandicarboxylic (FDCA), respectively. In combination deliberately retained pores, dual‐functional composites enable rate 9.51 mol g cat −1 h an FDCA yield 96.8% at current density 100 mA cm −2 /cell voltage 1.38 V integrated ORR/HMFOR system, significantly improved than traditional ORR/oxygen evolution system. This work has provided new insights into rational advanced electrocatalytic systems green valuable chemicals.

Язык: Английский

---

Electrochemical Treatment of Bisphenol A Facilitated by a Dual-Ligand Copper Metal-Organic Framework/Graphene Oxide Hybrid Catalyst

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116243 - 116243

Опубликована: Март 1, 2025

Язык: Английский

---