Advances of Synergistic Electrocatalysis Between Single Atoms and Nanoparticles/Clusters

Nano-Micro Letters, Год журнала: 2024, Номер 16(1)

Опубликована: Июль 9, 2024

Combining single atoms with clusters or nanoparticles is an emerging tactic to design efficient electrocatalysts. Both synergy effect and high atomic utilization of active sites in the composite catalysts result enhanced electrocatalytic performance, simultaneously provide a radical analysis interrelationship between structure activity. In this review, recent advances single-atomic site coupled are emphasized. Firstly, synthetic strategies, characterization, dynamics types clusters/nanoparticles introduced, then key factors controlling discussed. Next, several clean energy catalytic reactions performed over synergistic illustrated. Eventually, encountering challenges recommendations for future advancement energy-transformation electrocatalysis outlined.

Язык: Английский

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Rational Design and Controlled Synthesis of MOF-Derived Single-Atom Catalysts

Accounts of Materials Research, Год журнала: 2025, Номер unknown

Опубликована: Янв. 4, 2025

ConspectusSingle-atom catalysts (SACs) represent a transformative advancement in heterogeneous catalysis, offering unparalleled opportunities for maximizing atomic efficiency and enhancing performance. SACs are characterized by isolated metal atoms uniformly dispersed on suitable supports, ensuring each atom serves as an independent catalytic site. This dispersion mitigates aggregation, common issue conventional nanocatalysts, thus enabling superior activity, selectivity, stability. Metal–organic frameworks (MOFs) have emerged ideal platform SAC synthesis due to their structural diversity, tunable coordination environments, high surface areas. MOFs provide well-defined sites that facilitate the precise stabilization of single atoms, presenting significant advantages over traditional supports like oxides materials. Carbonization yields MOF-derived carbon materials retain key characteristics while enhanced electrical conductivity stability, making them various applications.Recent advances rational design controlled significantly improved performance electrocatalytic processes such oxygen reduction reaction (ORR) dioxide (CO2RR). However, challenges remain, including maintaining integrity during high-temperature carbonization, mass electron transport stability under conditions. To address these challenges, strategies using structure-directing agents stabilize MOF frameworks, forming high-energy porous networks, optimizing support morphologies been developed maximize active site exposure accessibility. On other hand, interplay between environments is crucial determining activity selectivity SACs. Advanced computational modeling, coupled with experimental validation, has provided insights into electronic structure interactions supports. These enabled researchers fine-tune local coordination, leading enhancements For instance, modifying environment optimizes binding strength intermediates, thereby improving both selectivity. account highlights our group's contributions SACs, focusing innovative design, functionalization, approaches enhance activity. Notable include maintain pore connectivity preserving areas, transport. We also discuss networks continuous improve interaction reactants, ultimately boosting efficiency. Techniques electrospinning employed create hierarchical structures one-dimensional nanofibers, transfer. The requires comprehensive understanding microenvironment surrounding sites, leveraging tools, can precisely control microenvironments achieve desired outcomes.MOF-derived hold substantial promise energy conversion chemical synthesis. Continued research essential optimize scalability, explore new applications, advancing sustainable catalysis. provides overview latest advancements highlighting potential next-generation electrocatalysts role technologies.

Язык: Английский

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In@Mn₃O₄ with Rich Interface Low‐Coordination Mn Active Sites for Boosting Electrocatalytic Nitrogen Reduction

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 10, 2025

Abstract Electrocatalytic nitrogen reduction reaction (NRR) is a potential strategy for green synthesis of ammonia. However, the lack efficient catalysts with both high activity and selectivity restricts development electrocatalytic NRR. In this study, simple water‐based redox method used to synthesize core–shell nanoparticle catalyst 2D Mn 3 O 4 as shell core. The rich interface low‐coordination helps provide more active sites At same time, nucleus gives electrons shell, jointly promotes adsorption activation nitrogen, well enhancement NRR activity. Moreover, designed hydrophobicity, which effectively reduces side hydrogen evolution H proton generated from water dissociation, improved. 0.1 m Na 2 SO , ammonia yield In@Mn 89.44 µg h −1 mg cat (−0.9 V vs RHE) maximum Faradaic efficiency 27.01% at −0.7 (vs RHE), superior most reported catalysts. unique structure design low coordination insights regulation nitrogen–water environment rational advanced electrocatalysts.

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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OH‐Induced Surface Reconstitution in Single Atoms and Clusters Integrated Electrocatalysts for Self‐Adaptive Oxygen Electrocatalysis

Advanced Functional Materials, Год журнала: 2024, Номер 34(52)

Опубликована: Авг. 27, 2024

Abstract The integration of atom clusters and single atoms into a unified system represents desirable approach for attaining enhanced catalytic performance. Nonetheless, the controllable synthesis single‐atom nanocluster integrated (SA‐NC) faces considerable challenges, mechanisms underlying activity remain poorly understood. In this research, cobalt‐based catalyst containing both coordinatively unsaturated (CoN 3 ) small nanoclusters (Co@SA‐NC) is synthesized. Co@SA‐NC not only facilitates charge mass transfer due to interconnected long‐range micromorphology, thus endowing efficient oxygen electrocatalytic reaction (ORR/OER), but also undergoes surface reconfiguration upon OH adsorption at high potentials in alkaline ORR/OER conditions. More appealingly, OH‐involved reconfigured adaptive structure promotes optimization energy barriers owing dynamic regulation from bridged between Co cluster whole process. Specific application metrics, zinc–air battery assembled using exhibit targeted power density enhancement with 270 mW cm −2 an medium. This work offers effective insight study SA‐NC pathways catalysis.

Язык: Английский

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Bridging the Gap Between Single Atoms, Atomic Clusters and Nanoparticles in Electrocatalysis: Hierarchical Structured Heterogeneous Catalysts

ChemElectroChem, Год журнала: 2024, Номер 11(10)

Опубликована: Март 25, 2024

Abstract In the past decade, remarkable progress has been made in advancing heterogeneous single‐atom catalysts (SACs), propelled by their extraordinary properties such as unique activities, high selectivity, and efficient metal utilization. contrast to nanoparticle counterparts, SACs showcase distinct advantages, yet they are not exempt from limitations. A primary constraint lies relatively low content lack of ensemble sites, potentially impacting overall catalytic activity. Stability concerns also arise, isolated atoms may be prone aggregation, oxidation, other structural changes. To surmount these challenges, there is a burgeoning exploration synergies between active species, single atoms, atomic clusters, or nanoparticles. This approach holds promise for augmenting efficiency complex reactions. However, systematic examination integration potential synergy notably absent. review strives fill that gap comprehensively exploring key interactions, complementary effects, bifunctional roles clusters nanoparticles when combined different compositions configurations, especially oxygen reduction reaction (ORR) hydrogen evolution (HER) applications. Additionally, sheds new light on underlying mechanisms offering insights through specific case studies. particular, it emphasizes dynamic nature each species interactions within innovative entities, specifically context electrocatalytic processes, backed compelling situ operando evidence. Concluding discussion, addresses current challenges provides glimpse into prospects integrated systems future. The contents can serve valuable guide design advanced catalysts, promoting deliberate combination binary multiple further advance field catalysis with clear roadmap easy assessments.

Язык: Английский

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Synergistic coupling of defective Ru nanoclusters with oxygen ligand steered Ru single atoms modifying interfacial water structure and key intermediates bonding toward efficient hydrogen energy conversion

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153433 - 153433

Опубликована: Июнь 24, 2024

Язык: Английский

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Activating Ru nanoclusters for robust oxygen reduction in aqueous wide-temperature zinc-air batteries

Matter, Год журнала: 2024, Номер unknown

Опубликована: Сен. 1, 2024

Язык: Английский

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The unique Co2Mn1N8 structure enhances peroxymonosulfate activation and singlet oxygen generation through a localized electric field

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162674 - 162674

Опубликована: Апрель 1, 2025

Язык: Английский

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Single-atom Mn sites confined into hierarchically porous core–shell nanostructures for improved catalysis of oxygen reduction

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 673, С. 239 - 248

Опубликована: Июнь 7, 2024

Язык: Английский

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