Insights into the pH effect on hydrogen electrocatalysis

Chemical Society Reviews, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.

Язык: Английский

---

Engineering Asymmetric Electronic Structure of Co─N─C Single‐Atomic Sites Toward Excellent Electrochemical H₂O₂ Production and Biomass Upgrading

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Abstract To advance electrochemical H 2 O production and unravel catalytic mechanisms, the precise structural coordination of single‐atomic M‐N‐C electrocatalysts is urgently required. Herein, Co─N 5 site with an asymmetric electronic configuration constructed to boost two‐electron oxygen reduction reaction (2e − ORR) compared symmetric 4 , effectively overcoming trade‐off between activity selectivity in production. Both experimental theoretical analyses demonstrate that breaking symmetry sites promotes activation molecules moderates adsorption key *OOH intermediate by disrupting linear scaling relationship for intermediates adsorption. This modulation enables efficient H₂O₂ its effective retention subsequent applications. As a proof concept, achieves rate as high 16.1 mol g cat −1 h flow cell, outperforming most recently reported counterparts. Furthermore, coupling 2e ORR oxidation cellulose‐derived carbohydrates accomplishes formic acid yields (84.1% from glucose 62.0%–92.1% other substrates), underpinning sustainable electro‐refinery biomass valorization at ambient conditions. By elucidating intrinsic 2e⁻ asymmetry sites, this work paves way high‐performance electrosynthesis.

Язык: Английский

---

Multifunctional Carbon‐Based Metal‐Free Catalysts for Cascade Electrochemical‐Chemical Coupling Catalyses

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Abstract Cascade electrochemical‐chemical coupling (CECC) involves sequential electrochemical and chemical reactions, using intermediates from processes as reactants for subsequent transformations to enhance the efficiency selectivity sustainable syntheses of complex chemicals. Despite its economic environmental benefits, CECC still faces multiple challenges, including a low utilization intermediate reactants, competitive side difficulties in design scale‐up catalysts, leading yield. To ensure economically viable CECC, it is imperative rationally develop cost‐efficient high‐performance such carbon‐based metal‐free electrocatalysts (C‐MFECs) certain carbon‐supported transition metal with high activity atomic precision desirable products. In this review, an overview recent advancements doping C‐MFECs provided enhancing their catalytic toward CECC. Three major systems based on are discussed; they hydrogen peroxide coupling, carbon dioxide upgrading, redox‐mediated systems. Current challenges future perspectives emerging field also addressed.

Язык: Английский

---

Metalloenzyme‐Inspired Cluster Fabrication within Mesoporous Channels Featuring Optimized Catalytic Microenvironments for Efficient Neutral pH H₂O₂ Electrosynthesis

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

Abstract In nature, some metalloenzymes facilitate highly efficient catalytic transformations of small molecules, primarily attributed to the effective coupling between their metal cluster active sites and surrounding microenvironment. Inspired by this, a thermotropic redispersion strategy incorporate bismuth nanoclusters (Bi NCs) into mesoporous channels, mimicking metalloenzyme‐like catalysis enhance two‐electron oxygen reduction reaction (2e − ORR) for neutral pH H 2 O electrosynthesis, is developed. This model electrocatalyst exhibits exceptional 2e ORR performance with >95% selectivity across 0.2–0.6 V vs RHE in electrolyte. Notably, system produces up 7.2 wt% solution at an industrially relevant current density ≈320 mA cm −2 , 90% Faradaic efficiency over 120 h flow cell, demonstrating significant practical potential. Mechanistic insights reveal that introduction Bi NCs enhances adsorption *OOH intermediate, facilitating process. Moreover, channels carbon support create favorable microenvironment aeration local alkalinity, further boosting productivity. catalyst design mimics optimal integration site microenvironment, offering valuable rational nature‐inspired small‐molecule catalysts.

Язык: Английский

---

A carbon membrane-aerated electrochemical reactor for efficient electrosynthesis of H2O2

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159609 - 159609

Опубликована: Янв. 1, 2025

Язык: Английский

---

Hydrogen Peroxide Electrosynthesis via Selective Oxygen Reduction Reactions Through Interfacial Reaction Microenvironment Engineering

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 28, 2024

Abstract The electrochemical two‐electron oxygen reduction reaction (2e − ORR) offers a compelling alternative for decentralized and on‐site H 2 O production compared to the conventional anthraquinone process. To advance this electrosynthesis system, there is growing interest in optimizing interfacial microenvironment boost electrocatalytic performance. This review consolidates recent advancements engineering selective conversion of . Starting with fundamental insights into mechanisms, an overview various strategies constructing favorable local environment, including adjusting electrode wettability, enhancing mesoscale mass transfer, elevating pH, incorporating electrolyte additives, employing pulsed electrocatalysis techniques provided. Alongside these regulation strategies, corresponding analyses technical remarks are also presented. Finally, summary outlook on critical challenges, suggesting future research directions inspire accelerate practical application delivered.

Язык: Английский

---

Electrocatalytic H2O2 production paired with value-added chemicals synthesis, contaminant remediation, and electricity generation

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159828 - 159828

Опубликована: Янв. 1, 2025

Язык: Английский

---

Carbon nitride quantum dots decorated with cyano groups for boosting photocatalytic hydrogen peroxide production

Green Energy & Environment, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

---

Zinc-air battery-H2O2 generation system: Current progress, key challenges, optimization strategies and future developments

Chinese Chemical Letters, Год журнала: 2025, Номер unknown, С. 111000 - 111000

Опубликована: Фев. 1, 2025

Язык: Английский

---

Surface reconstruction regulation of catalysts for cathodic catalytic electrosynthesis

Applied Catalysis O Open, Год журнала: 2025, Номер unknown, С. 207036 - 207036

Опубликована: Март 1, 2025

Язык: Английский

---