Ruthenium‐Based Electrocatalysts for Hydrogen Evolution Reaction: from Nanoparticles to Single Atoms

Small, Год журнала: 2024, Номер 20(45)

Опубликована: Июль 27, 2024

Abstract Benefiting from similar hydrogen bonding energy to Pt and much lower price compare with Pt, Ru based catalysts are promising candidates for electrocatalytic evolution reaction (HER). The catalytic activity of nanoparticles can be enhanced through improving their dispersion by using different supports, the strong metal supports interaction further regulate performance. In addition, single‐atom (SACs) almost 100% atomic utilization attract great attention coordinative atmosphere single atoms adjusted supports. Moreover, syngenetic effects improve performance catalysts. this review, progress HER electrocatalysts summarized according existing forms, including (NPs), (SAs) combination both NPs SAs. common such as carbon materials, oxides, phosphides sulfides classified clarify active centers. Especially, possible mechanisms reasons improved discussed experimental results theoretical calculations. Finally, some challenges opportunities prospected facilitate development HER.

Язык: Английский

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Atomically dispersed multi-site catalysts: bifunctional oxygen electrocatalysts boost flexible zinc–air battery performance

Energy & Environmental Science, Год журнала: 2024, Номер 17(14), С. 4847 - 4870

Опубликована: Янв. 1, 2024

Based on the advancements in atomically dispersed multi-site catalysts for FZABs, this review discusses design methodologies to regulate performance of bifunctional oxygen electrocatalysts from electronic and geometric structures.

Язык: Английский

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Competition and synergistic effects of Ru-based single-atom and cluster catalysts in electrocatalytic reactions

Science China Materials, Год журнала: 2024, Номер 67(6), С. 1706 - 1720

Опубликована: Апрель 8, 2024

Язык: Английский

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High density iridium synergistic sites boosting CO-tolerate performance for PEMFC anode

eScience, Год журнала: 2024, Номер 4(4), С. 100230 - 100230

Опубликована: Янв. 10, 2024

The usage of cheap crude H2 in proton-exchange membrane fuel cells (PEMFCs) is still unrealistic to date, due the suffering current Pt based nano-catalysts from impurities such as CO anode. Recently, synergistic active sites between single atom (SA) and nanoparticle (NP) have been found be promising for overcoming poisoning problem. However, lengthening nanoparticle-single (SA-NP) interface, i.e., constructing high density sites, remains highly challenging. Herein, we present a new strategy on molecular fusion create abundant SA-NP interfaces, with interfaces created 2D nitrogen doped carbon nanosheets (Ir-SACs&NPs/NC). Owing abundance interface catalyst was empowered tolerance towards up 1000 ppm feed. These findings provide guidelines design construction anti-poisoning catalysts PEMFC

Язык: Английский

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Advancing Heterogeneous Organic Synthesis With Coordination Chemistry‐Empowered Single‐Atom Catalysts

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 18, 2024

Abstract For traditional metal complexes, intricate chemistry is required to acquire appropriate ligands for controlling the electron and steric hindrance of active centers. Comparatively, preparation single‐atom catalysts much easier with more straightforward effective accesses arrangement control The presence coordination atoms or neighboring functional on supports' surface ensures stability single‐atoms their interactions individual substantially regulate performance Therefore, collaborative interaction between surrounding environment enhances initiation reaction substrates formation transformation crucial intermediate compounds, which imparts significant catalytic efficacy, rendering them a valuable framework investigating correlation structure activity, as well mechanism in organic reactions. Herein, comprehensive overviews both homogeneous complexes reactions are provided. Additionally, reflective conjectures about advancement synthesis also proposed present reference later development.

Язык: Английский

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Emerging Supported Metal Atomic Clusters for Electrocatalytic Renewable Conversions

ACS Catalysis, Год журнала: 2025, Номер unknown, С. 2434 - 2458

Опубликована: Янв. 27, 2025

Subnanometric supported metal atomic clusters (SMACs) composed of several to tens surface atoms have attracted increased research interest in electrocatalysis. SMACs been known show distinct properties compared their nanoparticles and single atom counterparts long developed for functional improvements. Tremendous advancements made the past few years, with a notable trend more precise design down an atomic/molecular level investigation transferring into practical devices, which motivates this timely review. To begin, review presents classifies classic latest synthetic strategies state-of-the-art characterization techniques SMACs. It then outlines discusses basic structure principles SMACs, highlighting importance organic ligands, size effect clusters, support-cluster interactions determining catalytic activity device stability. Thereafter, recent advances typical electrocatalysis processes from laboratory scale industrial are discussed obtain general understanding structure–activity correlations Current challenges future perspectives emerging field also discussed, aiming at practicing SMAC catalysts energy conversion devices.

Язык: Английский

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Non-free radical regulation mechanism based on pH in the peroxymonosulfate activation process mediated by single-atom Co catalyst for the specific rapid degradation of emerging pollutants

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 687, С. 617 - 629

Опубликована: Фев. 17, 2025

Язык: Английский

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Electrochemical N–N Oxidatively Coupled Dehydrogenation of 3,5-Diamino-1H-1,2,4-triazole for Value-Added Chemicals and Bipolar Hydrogen Production

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Март 8, 2025

Electrochemical H2 production from water favors low-voltage molecular oxidation to replace the oxygen evolution reaction as an energy-saving and value-added approach. However, there exists a mismatch between high demand for slow anodic reactions, restricting practical applications of such hybrid systems. Here, we propose bipolar approach, with generation N–N oxidatively coupled dehydrogenation (OCD) 3,5-diamino-1H-1,2,4-triazole (DAT), in addition cathodic generation. The system requires relatively low potentials 0.872 1.108 V vs RHE reach 10 500 mA cm–2, respectively. H-type electrolyzer only 0.946 1.129 deliver 100 respectively, electricity consumption (1.3 kWh per m3 H2) reduced by 68%, compared conventional splitting. Moreover, process is highly appealing due absence traditional hazardous synthetic conditions azo compounds at anode crossover/mixing H2/O2 electrolyzer. A flow-type operates stably cm–2 300 h. Mechanistic studies reveal that Pt single atom nanoparticle (Pt1,n) optimize adsorption S active sites over Pt1,n@VS2 catalysts. At anode, stepwise −NH2 DAT then oxidative coupling −N–N– predominantly form while generating H2. present report paves new way atom-economical aminotriazole green electrosynthesis chemicals.

Язык: Английский

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Nature‐Inspired Electrocatalysts for CO₂ Reduction to C₂₊ Products

Advanced Energy Materials, Год журнала: 2023, Номер 13(48)

Опубликована: Ноя. 9, 2023

Abstract The electrocatalytic reduction reaction of carbon dioxide (CO 2 RR) has gained significant attention as a promising approach to mitigate emissions and generate valuable chemicals fuels. However, the practical application CO RR been hindered by lack efficient selective electrocatalysts, particularly produce multi‐carbon (C 2+ ) products. Nature serves an ideal source inspiration for development biological organisms can efficiently catalyze same possess robust structures that are inherently scaling. In this review, recent advances in nature‐inspired design electrocatalysts C products summarized categorized based on their source, including coordination sphere metalloenzymes cascade reactions within enzyme, well local environment. importance understanding fundamental mechanisms different contexts between nature technological process is highlighted, with aim improve

Язык: Английский

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Synergistic effect between Co single atoms and Pt nanoparticles for efficient alkaline hydrogen evolution

Materials Futures, Год журнала: 2024, Номер 3(3), С. 035101 - 035101

Опубликована: Май 30, 2024

Abstract In the pursuit of sustainable energy solutions, efficiency hydrogen evolution reaction (HER) in alkaline conditions has been a significant challenge, primarily due to sluggish dissociation water molecules on platinum (Pt) catalysts. Addressing this critical issue, our study introduces an innovative Pt-Co@NCS catalyst. This catalyst synergistically combines Pt nanoparticles with Co single atoms nitrogen-doped carbon scaffold, overcoming traditional bottleneck slow dissociation. Its unique porous concave structure and nitrogen-enriched surface not only provide abundant anchoring sites for but also create conducive hydrophilic environment around particles. design leads drastic improvement process, as demonstrated by CO stripping deuterium labeling experiments. Achieving outstanding current density 162.8 mA cm −2 at −0.1 V versus RHE, Tafel slope 26.2 mV dec −1 , superior nominal mass activity 15.75 μ g represents step forward enhancing HER efficiency, indicating promising advancements field.

Язык: Английский

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