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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Local Electronic Regulation by Oxygen Coordination with Single- Atomic Iridium on Ultrathin Cobalt Hydroxide Nanosheets for Electrocatalytic Oxygen Evolution

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Rationally optimizing the atomic and electronic structure of electrocatalysts is an effective strategy to improve activity electrocatalytic oxygen evolution reaction (OER), yet it remains challenging. In this work, heterointerface engineering developed accelerate OER by decorating iridium atoms on low-crystalline cobalt hydroxide nanosheets (Ir–Co(OH)x) via oxygen-coordinated bonds modulate local structure. Leveraging detailed spectroscopic characterizations, Ir species were proved promote charge transfer through Ir–O–Co coordination between atom Co(OH)x support. As a result, optimized Ir–Co(OH)x exhibits excellent with low overpotential 251 mV drive 10 mA cm–2, which 63 lower than that pristine Co(OH)x. The experimental results density functional theory calculations reveal isolated can regulate environment configuration Co(OH)x, thus accelerating catalytic kinetics. This work provides atomistic for modulation metal active sites in design high-performance electrocatalysts.

Язык: Английский

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Cerium oxide cluster modified nickel sulfide/carbon nitride heterostructure for efficient oxygen evolution reaction

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

Опубликована: Март 1, 2025

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Accumulation of Long‐Lived Photogenerated Holes at Copper Yolk‐Shell Heterojunctions via Heterogeneous Contraction and Reduction Strategies for Enhanced Photocatalytic Oxidation

Energy & environment materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 18, 2025

Active holes outperform photoelectron‐mediated oxygen reduction in degrading recalcitrant organics under anaerobic conditions, yet their utilization is limited by rapid charge recombination. This challenge was addressed through Cu‐based yolk‐double‐shell microspheres (Cu/Cu 2 O@C‐2shell) engineered via heterogeneous contraction and strategies. Work function analyses confirm Schottky junction‐driven electron transfer from Cu O to Cu, generating an internal electric field that suppresses backflow. Density functional theory reveals Cu‐mediated enhancement of near‐Fermi states (Cu 3d orbitals) a directional → C pathway, spatially isolating O. Finite‐difference time‐domain simulations reveal light‐induced gradients the dual‐shell architecture: 0 ‐mediated localized surface plasmon resonance effect enhances concentration, while hierarchical interfaces create outward‐to‐inward gradient, directing migration inward stabilizing oxidative at surface. The optimized O)@C‐2shell exhibits 38‐fold higher tetracycline degradation sunlight versus benchmarks, with treated water supporting Escherichia coli survival wheat growth. study provides design strategy for accumulation long‐lived on semiconductor photocatalysts.

Язык: Английский

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3D Self-Supported FeOOH@C Hybrid Nanosheet Arrays as Electrocatalyst for Oxygen Evolution

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

Опубликована: Июнь 3, 2025

Язык: Английский

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