Soft nanoforest of metal single atoms for free diffusion catalysis

Science Advances, Год журнала: 2025, Номер 11(3)

Опубликована: Янв. 15, 2025

Metal single atoms are of increasing importance in catalytic reactions. However, the mass diffusion is yet substantially limited by confined surface support comparison to homogeneous catalysis. Here, we demonstrate that cylindrical micellar brushes with highly solvated poly(2-vinylpyridine) coronas can immobilize 33 types metal 8.3 40.9 weight % contents on conventional electrodes under ambient conditions. This favored forest-like hierarchically open soft structure and dynamic coordination between metals pyridine groups. It was found nanoforests individual noble be well an aqueous electrolyte comprehensively expose atomic active sites nanoforest Pt nickel foam reveals high electrochemical performance for hydrogen evolution. The brush also enables simultaneous anchoring multiple cathode anion-exchange membrane electrolyzer long-term stable water electrolysis.

Язык: Английский

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Comprehensive Insight Into Electronic Modulation of Rare‐Earth Elements for Enhancing Electrocatalytic Performance of Atomically Dispersed Materials

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Abstract Atomically dispersed materials have been a thriving research field due to their maximum atomic utilization and remarkable performance in energy conversion storage systems. Owing the large radius, strong oxophilicity, unique electronic properties, rare‐earth (RE) elements widely investigated as oxide carriers promoters atomically manipulate regulate structure of active species. Single‐atom state with an adjustable coordination environment on N‐doped carbon endows RE metals special states outstanding catalytic performances. A thorough comprehension modulation mechanism paves way for construction advanced RE‐based electrocatalysts high activity, stability, selectivity. This review provides widespread insight into roles modulating properties combined structure–performance relationship electrocatalysis processes. The characteristic physical chemical are highlighted, synthetic strategy is discussed. Finally, summary perspectives rational design development highly efficient catalysts proposed. aims provide guideline promoting effective functional materials.

Язык: Английский

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Research progress of Ce-based electrocatalysts in hydrogen evolution reaction

Journal of Rare Earths, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Eu2O3-modified cobalt nanoparticles supported carbon-based Nanorods for enhanced oxygen reduction reaction performance

Journal of Electroanalytical Chemistry, Год журнала: 2025, Номер unknown, С. 119031 - 119031

Опубликована: Фев. 1, 2025

Язык: Английский

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A High-Nickel Nanoflake Catalyst Based on NiFe-LDH and its Application in Efficient Monolithic Water Decomposition

Catalysis Letters, Год журнала: 2025, Номер 155(4)

Опубликована: Март 1, 2025

Язык: Английский

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Single‐Atom Nickel Encapsulated in Nanosheet‐Coiled rGO‐CTAB‐MoS₂ Nanoflowers for High‐Efficiency and Long‐Term Hydrogen Evolution in Acidic Medium

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Abstract Molybdenum disulfide (MoS 2 ) is a promising, cost‐effective alternative to noble metal catalysts for electrocatalytic hydrogen evolution reactions (HER). However, its poor conductivity and limited active sites hinder application. In this study, single‐atom nickel (Ni SA) encapsulated in nanosheet‐coiled rGO‐cetyltrimethyl ammonium bromide (CTAB)‐MoS nanoflowers designed synthesized using hydrothermal photodeposition methods. The resulting Ni SA/rGO‐CTAB‐MoS exhibited outstanding HER performance, with an overpotential of 79 mV Tafel slope 33.28 dec −1 at current density 10 mA cm −2 0.5 m H SO 4 . Notably, it demonstrates exceptional durability, maintaining performance over 300 h −0.828 V versus RHE. A milligram the catalyst produced 1209.4 L under highly acidic conditions ambient temperature pressure, making viable commercial Pt/C catalysts. Experimental theoretical investigations reveal that interplay between SA surrounding rGO‐CTAB‐MoS significantly enhances availability, intrinsic conductivity, structural stability, favorable adsorption behavior atoms, thereby leading performance. This work presents promising approach develop durable MoS ‐based excellent activity.

Язык: Английский

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Dual role of Ce in FeS2/Ni3S2 nanoarray for oxygen evolution reaction: Promoting OH– absorption and *O desorption

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161821 - 161821

Опубликована: Март 1, 2025

Язык: Английский

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Toward a molecular-scale picture of water electrolysis: mechanistic insights, fundamental kinetics and electrocatalyst dynamic evolution

Coordination Chemistry Reviews, Год журнала: 2025, Номер 536, С. 216651 - 216651

Опубликована: Апрель 6, 2025

Язык: Английский

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Fe/Ce Codoped Ni₂P Catalyst to Enhance Alkaline Oxygen Evolution Reaction

ACS Applied Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Язык: Английский

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Tungsten Defect‐Induced Surface Reconstruction of Ce₂W₂O₉ Arrays for Enhanced Oxygen Evolution Reaction Performance

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Abstract Cerium oxide has emerged as a crucial promoter for regulating the electrocatalytic oxygen evolution reaction (OER) performance of other active components; however, mechanism underlying its intrinsic activity remains poorly understood. Herein, novel self‐supported coral‐like Ce 2 W O 9 array is synthesized on carbon cloth using simple ion‐exchange method. The in situ electrochemical surface reconstruction facilitated formation defects, which effectively altered local bonding environment atoms. Based advanced characterization techniques and theoretical calculations, it concluded that optimized centers served sites, substantially reducing energy barrier potential‐determining step ( * OOH formation), turn, facilitating generation boosting activity. Consequently, reconstructed electrode exhibited an exceptionally low overpotential 351 mV at 100 mA cm −2 1 m KOH, while maintaining remarkable stability over 000 h 20 . This study provides valuable insights into mechanistic understanding strategic design rare‐earth oxide‐based electrocatalysts.

Язык: Английский

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