Efficient Electrochemical N Fixation over Donor-Acceptor FeEu─N Active Site.

Electrocatalytic nitrogen reduction reaction (NRR) represents a promising approach to sustainable ammonia production, but the low Faradaic efficiency (FE) and poor ammonia yield rate limit its practical application. This work demonstrates an innovative FeEu─NC catalyst that leverages distinct donor-acceptor electron pairs between Fe and Eu atoms to significantly enhance the electrocatalytic NRR. The FeEu─NC catalyst demonstrates an outstanding ammonia yield of 221.

Boosting electrochemical coupling of N reduction and biomass oxidation via COF-derived N,P,S-multicoordinated porous carbon with Pt active centers.

The electrochemical nitrogen reduction reaction (eNRR) is a sustainable pathway for ammonia synthesis, yet it faces challenges in selectivity and efficiency. Herein, we report a catalyst characterized by the uniform anchoring of Pt single-atom centers within a nitrogen, phosphorus, sulfur, and carbon (NPSC) multiligand framework, thereby maximizing the advantages of the Pt noble metal and significantly enhancing the eNRR performance. In this catalyst, sulfur-modulated anchoring of the Pt center induces ligand-to-metal charge transfer (LMCT), primarily leveraging the strong interaction between the Pt 4f band and the S 2p orbitals to activate and protonate N effectively.

Pt-Decorated NiMo/Carbon Hybrid Catalysts for High-Current-Density Hydrogen Evolution: Synergistic Electronic Modulation and Industrial Application Potential.

In response to the urgent demand for sustainable hydrogen production under industrial high-current-density conditions, this study presents the development of a Pt-decorated NiMo-based carbon-supported catalyst (Pt-NiMo/C) for efficient alkaline hydrogen evolution reaction (HER). The catalyst was synthesized via a solvent evaporation method followed by high-temperature pyrolysis, achieving uniform dispersion of Pt-NiMo nanoparticles on conductive carbon. Electrochemical evaluations revealed exceptional HER performance with ultralow overpotentials of 20 and 170 mV versus RHE at current densities of 10 and 100 mA cm⁻, respectively, surpassing commercial Pt/C benchmarks.

Rational Synthesis of Isomeric Graphdiyne Frameworks toward Single-Ruthenium Catalysts and High-Performance Nitrogen Reduction.

Graphdiynes (GDYs), synthesized via direct coupling of arylacetylenes, have attracted great attention due to their unique electronic properties and structural diversity, typically forming 2D layered frameworks. However, crystalline GDY-like frameworks with 3D topology remain challenging to synthesize. Here, the study reports two highly crystalline, isomeric GDY-like frameworks with ThSi2 topology, constructed from 2,2'-binaphthalene and 6,6'-biazulene-based monomers.

2D Rhodium-Isocyanide Frameworks.

2D metal-organic frameworks (2D MOFs) are emerging organic van der Waals materials with great potential in various applications owing to their structural diversity, and tunable optoelectronic properties. So far, most reported 2D MOFs rely on metal-heteroatom coordination (e.g.

Anion-Exchange Strategy for Ru/RuO-Embedded N/S--Doped Porous Carbon Composites for Electrochemical Nitrogen Fixation.

Ionic porous polymers have been widely utilized efficiently to anchor various metal atoms for the preparation of metal-embedded heteroatom-doped porous carbon composites as the active materials for electrocatalytic applications. However, the rational design of the heteroatom and metal elements in HPC-based composites remains a significant challenge, due to the tendency of the aggregation of metal nanoparticles during pyrolysis. In this study, a nitrogen (N)- and sulfur (S)-enriched ionic covalent organic framework (COF) incorporating viologen and thieno[3,4-b] thiophene (TbT) was constructed via Zincke-type polycondensation.

Double-single-atom MoCu-embedded porous carbons boost the electrocatalytic N reduction reaction.

NH is an essential ingredient of chemical, fertilizer, and energy storage products. Industrial nitrogen fixation consumes an enormous amount of energy, which is counter to the concept of carbon neutrality, hence eNRR ought to be implemented as a clean alternative. Herein, we propose a double-single-atom MoCu-embedded porous carbon material derived from uio-66 (MoCu@C) by plasma-enhanced chemical vapor deposition (PECVD) to boost eNRR capabilities, with an NH yield rate of 52.

Single Ru-N Site-Embedded Porous Carbons for Electrocatalytic Nitrogen Reduction.

Ammonia is an effective feedstock for chemicals, fertilizers, and energy storage. The electrocatalytic nitrogen reduction reaction (NRR) is an alternative, efficient, and clean technology for ammonia production, relative to the traditional Haber-Bosch method. Single-metal catalysts are widely studied in the field of NRR.

Embedding Ru Clusters and Single Atoms into Perovskite Oxide Boosts Nitrogen Fixation and Affords Ultrahigh Ammonia Yield Rate.

Ammonia is a key chemical feedstock worldwide. Compared with the well-known Haber-Bosch method, electrocatalytic nitrogen reduction reaction (ENRR) can eventually consume less energy and have less CO emission. In this study, a plasma-enhanced chemical vapor deposition method is used to anchor transition metal element onto 2D conductive material.