Efficient Homolytic Cleavage of H₂O₂ on Hydroxyl‐Enriched Spinel CuFe₂O₄ with Dual Lewis Acid Sites

Angewandte Chemie, Год журнала: 2024, Номер 136(17)

Опубликована: Март 1, 2024

Abstract Traditional H 2 O cleavage mediated by macroscopic electron transfer (MET) not only has low utilization of , but also sacrifices the stability catalysts. We present a non‐redox hydroxyl‐enriched spinel (CuFe 4 ) catalyst with dual Lewis acid sites to realize homolytic . The results systematic experiments, in situ characterizations, and theoretical calculations confirm that tetrahedral Cu optimal acidity strong delocalization can synergistically elongate O−O bonds (1.47 Å → 1.87 Å) collaboration adjacent bridging hydroxyl (another site). As result, free energy is decreased (1.28 eV 0.98 eV). be efficiently split into ⋅OH induced CuFe without MET, which greatly improves (65.2 %, nearly times than traditional catalysts). system assembled affords exceptional performance for organic pollutant elimination. scale‐up experiment using continuous flow reactor realizes long‐term (up 600 mL), confirming tremendous potential practical applications.

Язык: Английский

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Surface S-Doped Nanostructured RuO₂ and Its Anion Passivating Effect for Efficient Overall Seawater Splitting

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Electrolysis of seawater for hydrogen (H2) production to harvest clean energy is an appealing approach. In this context, there urgent need catalysts with high activity and durability. RuO2 electrocatalysts have shown efficient in the oxygen evolution reactions (HER OER), but they still suffer from poor stability. Herein, surface S-doped nanostructured (S-RuO2) rationally fabricated overall splitting. Doping S enhances (overpotentials 25 mV HER 243 long-term durability (1000 h at 100 mA cm–2), achieves nearly 100% Faraday efficiency (FE). Moreover, S-RuO2-based anion exchange membrane electrolyzer requires 2.01 V reach 1.0 A cm–2 under demanding industrial conditions. Experimental analysis theoretical calculations indicate that introduction could lower valence state Ru, thereby conferring enhanced Furthermore, S-RuO2 electrocatalyst highly protected by surface, which repels Cl– alkaline seawater. This investigation presents a feasible strategy designing RuO2-based splitting both performance good resistance anodic corrosion.

Язык: Английский

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Stability challenges of transition metal-modified cathodes for electro-Fenton process: A mini-review

Chemosphere, Год журнала: 2025, Номер 373, С. 144159 - 144159

Опубликована: Янв. 30, 2025

Язык: Английский

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Carbon-coated catalysts: synthesis, optimization and applications

Catalysis Reviews, Год журнала: 2025, Номер unknown, С. 1 - 62

Опубликована: Фев. 19, 2025

Язык: Английский

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FeOCl in Advanced Oxidization Processes for Water Purification: A Critical Review

Current Pollution Reports, Год журнала: 2023, Номер 9(2), С. 143 - 164

Опубликована: Март 31, 2023

Язык: Английский

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