Ru/Ir‐Based Electrocatalysts for Oxygen Evolution Reaction in Acidic Conditions: From Mechanisms, Optimizations to Challenges

Advanced Science, Journal Year: 2024, Volume and Issue: 11(21)

Published: March 19, 2024

Abstract The generation of green hydrogen by water splitting is identified as a key strategic energy technology, and proton exchange membrane electrolysis (PEMWE) one the desirable technologies for converting renewable sources into hydrogen. However, harsh anode environment PEMWE oxygen evolution reaction (OER) involving four‐electron transfer result in large overpotential, which limits overall efficiency production, thus efficient electrocatalysts are needed to overcome high overpotential slow kinetic process. In recent years, noble metal‐based (e.g., Ru/Ir‐based metal/oxide electrocatalysts) have received much attention due their unique catalytic properties, already become dominant acidic OER process applied commercial devices. these still face thorny problem conflicting performance cost. this review, first, metal briefly classified according forms existence, mechanisms outlined. Then, focus on summarizing improvement strategies with respect activity stability over years. Finally, challenges development prospects discussed.

Language: Английский

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Diatomic Iron with a Pseudo-Phthalocyanine Coordination Environment for Highly Efficient Oxygen Reduction over 150,000 Cycles

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(36), P. 24842 - 24854

Published: Aug. 26, 2024

Atomically dispersed Fe-N-C catalysts emerged as promising alternatives to commercial Pt/C for the oxygen reduction reaction. However, majority of showed unsatisfactory activity and durability due their inferior O-O bond-breaking capability rapid Fe demetallization. Herein, we create a pseudo-phthalocyanine environment coordinated diatomic iron (Fe

Language: Английский

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Advanced dual-atom catalysts for rechargeable zinc-air batteries

Energy Reviews, Journal Year: 2024, Volume and Issue: 3(3), P. 100076 - 100076

Published: Feb. 24, 2024

Language: Английский

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The application of diatomic catalysts in advanced oxidation Fenton-like water treatment technology:A mini review

Environmental Functional Materials, Journal Year: 2024, Volume and Issue: 3(1), P. 59 - 71

Published: March 1, 2024

In the past few years, there has been a widespread utilization of diatomic catalysts in catalysis sector because their distinct benefits. this review, we specify application based on carbon and nitride Fenton-like field. This paper focuses synthesis characterization homonuclear heteronuclear methods to improve catalytic performance by optimizing d-band structure, tuning charge transfer, constructing spin states. There is no doubt that have bright prospects

Language: Английский

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Electronic structure and geometric construction modulation of carbon-based single/dual atom catalysts for electrocatalysis

Energy Reviews, Journal Year: 2024, Volume and Issue: 3(3), P. 100075 - 100075

Published: Feb. 23, 2024

Both carbon-based single atom catalysts (SACs) and dual (DACs) have garnered significant attention in the field of electrochemical reactions because impressive attributes, including exceptional catalytic activity, selectivity, cost-effectiveness. The ability to modulate electronic structure geometric construction active sites within SACs/DACs is paramount for unleashing their complete potential, which turn can ultimately dictate behavior with unprecedented precision. In this review, recent major developments regulation strategies modulating are summarized. For SACs, recently reported modulation methods categorized into four strategies, adjusting density atoms, defect engineering, confinement effect strain engineering. And DACs, five contain bonded dual-atom adjustment, non-bonded bridged metal nonmetal bilayer adjustment homogeneous adjustment. developed synthetic comprehensively summarized, especially configuration discussed detail, different applications reactions, unique mechanism highlighted. Finally, challenges prospects tailoring structures arrangements further discussed.

Language: Английский

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Advanced development of dual-atom catalysts: From synthesis methods to versatile electrocatalytic applications

Journal of Power Sources, Journal Year: 2024, Volume and Issue: 613, P. 234923 - 234923

Published: June 19, 2024

Language: Английский

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Dual-atom catalysts with microenvironment regulation for water electrolysis

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(39), P. 26316 - 26349

Published: Jan. 1, 2024

Dual-atom catalysts (DACs) have emerged as highly promising and efficient for water electrolysis, primarily due to their distinct dual-atom site effects.

Language: Английский

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Engineering Local Coordination and Electronic Structures of Dual-Atom Catalysts

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Heterogeneous dual-atom catalysts (DACs), defined by atomically precise and isolated metal pairs on solid supports, have garnered significant interest in advancing catalytic processes technologies aimed at achieving sustainable energy chemical production. DACs present board opportunities for atomic-level structural property engineering to enhance performance, which can effectively address the limitations of single-atom catalysts, including restricted active sites, spatial constraints, typically positive charge nature supported single species. Despite rapid progress this field, intricate relationship between local atomic environments behavior dual-metal sites remains insufficiently understood. This review highlights recent major challenges field. We begin discussing modulation coordination electronic structures its impact performance. Through specific case studies, we demonstrate importance optimizing entire ensemble achieve efficient, selective, stable performance both model industrially relevant reactions. Additionally, also outline future research directions, emphasizing synthesis, characterization, practical applications, aiming fully unlock potential these advanced catalysts.

Language: Английский

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Recent Developments of Dual Single‐Atom Catalysts for Nitrogen Reduction Reaction

Chemistry - A European Journal, Journal Year: 2023, Volume and Issue: 30(2)

Published: Sept. 28, 2023

Ammonia is vital for fertilizer production, hydrogen storage, and alternative fuels. The conventional Haber-Bosch process ammonia production energy-intensive environmentally harmful. Designing friendly low-energy consumption strategies electrocatalytic N

Language: Английский

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Atomically Integration of O-Bridged Co-Fe Hetero-Pairs as Tandem Photocatalyst Towards Highly Efficient Hydroxyl Radicals Production

Published: Jan. 1, 2024

Photocatalytic Fenton-coupled oxygen reduction reaction (ORR) is a promising strategy for •OH production. Single-atom catalysts (SACs), featuring high atom utilization, exhibit superior catalytic activity. However, it remains challenge to synchronously achieve efficient catalysis of both steps on one active site. Herein, novel Co-Fe hetero-atom pair tandem photocatalyst was precisely constructed by pre-designing the structure covalent organic frameworks (COFs) and introduction strategies sites. Thanks synergism neighboring atoms, Co-Fe-COF presents highly hydroxyl radicals production following process O2+H2O→H2O2→•OH. Additionally, immobilization pairs pore walls COF can boost enrichment contaminants, thus increasing utilization •OH. Theoretical simulations reveal proximity electronic effect O-bridged not only thermodynamically promotes formation OOH*, but also dynamically activates self-healing cycle Fe(II)/Fe(III). This work provides routine designing high-performance catalysts.

Language: Английский

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