Accelerated O2 adsorption and stabilized *OOH for electrocatalytic H2O2 production

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Hydroxyl combined with nitrogen on biomass carbon promotes the electrocatalytic H\(_{2}\)O\(_{2}\) selectivity

Journal of Metals Materials and Minerals, Год журнала: 2025, Номер 35(1), С. e2216 - e2216

Опубликована: Фев. 22, 2025

Elevating the selectivity of two-electron oxygen reduction reaction (2e‒ ORR) is challenging. Herein, hydroxyl combined with nitrogen on biomass carbon exhibits a high H2O2 over wide potential range 0 V to 0.5 vs. RHE, which nearly 97% at 0.3 RHE. The combination and improves adsorption desorption intermediates, finally changing pathway promoting 2e‒ ORR. Faradaic efficiency (FE) reaches 98% Furthermore, typical organic pollutants were degraded site in flow cell. This work illustrates

Язык: Английский

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Ni3N2 clusters anchored on biomass derived N-doped carbon nanostructures for efficient hydrogen peroxide electrosynthesis

Chinese Chemical Letters, Год журнала: 2025, Номер unknown, С. 111045 - 111045

Опубликована: Март 1, 2025

Язык: Английский

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MXene-Regulated Indium-Based Metal–Organic Framework Material for Electrochemical Reduction of CO₂ into Pure Formic Acid Aqueous Solution

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 12, 2025

Electrochemical CO2 reduction reaction provides a mild avenue for resource utilization of CO2. Metal-organic framework (MOF) materials are considered among the promising catalysts due to unique structural advantages. However, catalytic performance MOFs is hindered by poor conductivity, making it crucial enhance charge transfer improved efficiency. Herein, hybrid catalyst was constructed based on In-based porphyrin (In-TCPP) and conducting MXene nanosheets efficient conversion. As expected, as conductive support significantly improves material, achieving Faraday efficiency HCOO- 94.0% with 2.2-fold increase in practical current density. Furthermore, pure formic acid solution concentration ca. 0.22 M prepared via execution solid-state electrolyte-mediated MEA (MEA-SSE) device. Theoretical calculations situ ATR-FTIR spectra reveal that introduction not only endows material metallic properties facilitate but also modulates electronic structure optimize adsorption key intermediate *OCHO. This work enlightens rational design MOF-based electrocatalysts regulation demonstrates promise MEA-SSE device applications.

Язык: Английский

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Approaching efficient H2O2 electrosynthesis on ZnO nanorod via a combined strategy of crystal facet-engineering and surface amorphization

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 695, С. 137718 - 137718

Опубликована: Апрель 27, 2025

Язык: Английский

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Rational Design Strategies for Covalent Organic Frameworks Toward Efficient Electrocatalytic Hydrogen Peroxide Production

Catalysts, Год журнала: 2025, Номер 15(5), С. 500 - 500

Опубликована: Май 21, 2025

Hydrogen peroxide (H2O2) is a versatile and environmentally friendly oxidant with broad applications in industry, energy, environmental remediation. Electrocatalytic H2O2 production via the two-electron oxygen reduction reaction (2e− ORR) has emerged as sustainable alternative to traditional anthraquinone processes. Covalent organic frameworks (COFs), class of crystalline porous materials, exhibit high structural tunability, large surface areas, chemical stability, making them promising electrocatalysts for 2e− ORR. This review systematically summarizes recent advances COF-based production, including both metal-free metal-containing systems. We discuss key strategies COF design—such dimensional modulation, linkage engineering, heteroatom doping, post-synthetic modification—and highlight their effects on activity, selectivity, stability. Fundamental insights into ORR mechanism evaluation metrics are also provided. Finally, we offer perspectives current challenges future directions, emphasizing integration machine learning, conductivity enhancement, scalable synthesis advance COFs toward practical electrosynthesis.

Язык: Английский

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Mechanistic Insights and Strategic Assembly of Tailored Novel Oxide‐Phosphide Heterostructure Nanocrystals

Small Structures, Год журнала: 2025, Номер unknown

Опубликована: Июнь 3, 2025

The strategic design of heterostructure nanocrystals with controlled interfaces and compositions is a cornerstone for advancing catalytic energy‐related applications. However, comprehensive understanding the underlying mechanisms governing growth functionality these systems remains significant bottleneck. Herein, detailed mechanistic investigation synthetic approach presented synthesis In 2 O 3 @Cu 2.7 P oxide‐phosphide heterostructures via facile one‐pot hot‐injection method. This strategy takes advantage differing redox potentials reactivities precursors to sequentially nucleate control distinct domains, challenging feat in synthesis. self‐regulated mechanism initial situ formation copper seeds, followed by on surface phosphorization underscores complex interplay between nucleation kinetics, processes, interfacial energies. Through structural electrochemical characterization, this study offers invaluable insights into mechanism, bridging critical gap understanding. synthesized are explored their activity oxygen reduction reaction. provides robust predictive framework advanced tunable functionalities energy conversion

Язык: Английский

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Enhanced Electrocatalytic Nitrate-to-Ammonia Performance from Mott-Schottky Design to Induce Electron Redistribution

Chemical Science, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

A Mott–Schottky type electrocatalyst of Co/In 2 O 3 fiber is fabricated for electrocatalytic nitrate-to-ammonia conversion, presenting a NH yield rate 70.1 mg cm −2 h −1 at −0.8 V vs. RHE, greatly surpassing the single-component Co and In samples.

Язык: Английский

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