CeO2 as an “electron pump” to boost the performance of Co4N in electrocatalytic hydrogen evolution, oxygen evolution and biomass oxidation valorization

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 325, С. 122364 - 122364

Опубликована: Янв. 3, 2023

Язык: Английский

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Electrochemical Oxidation of 5‐Hydroxymethylfurfural on CeO₂‐Modified Co₃O₄ with Regulated Intermediate Adsorption and Promoted Charge Transfer

Advanced Functional Materials, Год журнала: 2023, Номер 33(14)

Опубликована: Янв. 17, 2023

Abstract Electrocatalytic 5‐hydroxymethylfurfural oxidation reaction (HMFOR) can replace the kinetically slow oxygen evolution to yield high value‐added chemicals. In this study, interface engineering is constructed by modifying CeO 2 nanoparticles on Co 3 O 4 nanowires supported nickel foam (NF). The construction of heterointerface facilitate structural catalysts and charge transfer, as a result, successfully synthesized NF@Co /CeO exhibits higher conversion (98.0%), 2,5‐furandicarboxylic acid (FDCA) (94.5%), Faradaic efficiency (97.5%) at low electrolysis potential 1.40 V RHE compared NF@CeO . Density‐functional theory calculations indicate that establishment effectively regulate intermediate adsorption promote electron which greatly reduces activation energy dehydrogenation step in 5‐formyl‐2‐furancarboxylic (FFCA), promotes further FFCA FDCA, thereby improving performance HMFOR. HMFOR behavior effect deeply explored, provides guidance for future design with efficient performance.

Язык: Английский

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Metal Alloys‐Structured Electrocatalysts: Metal–Metal Interactions, Coordination Microenvironments, and Structural Property–Reactivity Relationships

Advanced Materials, Год журнала: 2023, Номер 35(51)

Опубликована: Апрель 24, 2023

Metal alloys-structured electrocatalysts (MAECs) have made essential contributions to accelerating the practical applications of electrocatalytic devices in renewable energy systems. However, due complex atomic structures, varied electronic states, and abundant supports, precisely decoding metal-metal interactions structure-activity relationships MAECs still confronts great challenges, which is critical direct future engineering optimization MAECs. Here, this timely review comprehensively summarizes latest advances creating MAECs, including interactions, coordination microenvironments, relationships. First, fundamental classification, design, characterization, structural reconstruction are outlined. Then, merits modulation strategies recent breakthroughs for noble non-noble metal-structured thoroughly discussed, such as solid solution alloys, intermetallic single-atom alloys. Particularly, unique insights into bond theoretical understanding, operando techniques mechanism disclosure given. Thereafter, current states diverse with a focus on property-reactivity relationships, reaction pathways, performance comparisons discussed. Finally, challenges perspectives systematically It believed that comprehensive can offer substantial impact stimulating widespread utilization metal materials electrocatalysis.

Язык: Английский

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LDH-based nanomaterials for photocatalytic applications: A comprehensive review on the role of bi/trivalent cations, anions, morphology, defect engineering, memory effect, and heterojunction formation

Journal of Energy Chemistry, Год журнала: 2023, Номер 84, С. 242 - 276

Опубликована: Май 25, 2023

Язык: Английский

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Regulating Keto–Enol Tautomerism of β-Ketoenamine Covalent–Organic Frameworks for Photocatalytic Oxidative Coupling of Amines

ACS Catalysis, Год журнала: 2023, Номер 13(20), С. 13167 - 13180

Опубликована: Сен. 28, 2023

Covalent–organic frameworks (COFs), as promising metal-free porous catalysts, have become a hot research topic in the field of (photo)catalysis. Herein, series β-ketoenamine COFs are synthesized using different amino and aldehyde monomers, these exhibit diverse characteristics terms crystallinity, chemical structure, microscopic morphology, optoelectronic properties. TpBD-(CH3)2 from 2,4,6-triformylphloroglucinol o-tolidine exhibits an extended π-conjugated structure higher crystallinity well more suitable redox potential, which greatly enhances photocatalytic activity benzylamine oxidation. Besides, increased number hydroxyl groups on trialdehyde-based monomer contributes to ketoamines TpTAB skeleton, is favorable for photocatalysis. Meanwhile, can rapidly increase their own temperature through internal structural evolution under light irradiation, thus boosting oxidative coupling amines with high efficiency. This work could provide some guidance rational design functional advanced organic transformations.

Язык: Английский

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Transition metal-based self-supported anode for electrocatalytic water splitting at a large current density

Coordination Chemistry Reviews, Год журнала: 2023, Номер 495, С. 215381 - 215381

Опубликована: Авг. 19, 2023

Язык: Английский

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Electrochemical Oxidation of Small Molecules for Energy‐Saving Hydrogen Production

Advanced Energy Materials, Год журнала: 2024, Номер 14(30)

Опубликована: Май 27, 2024

Abstract Electrochemical water splitting is a promising technique for the production of high‐purity hydrogen. Substituting slow anodic oxygen evolution reaction with an oxidation that thermodynamically more favorable enables energy‐efficient Moreover, this approach facilitates degradation environmental pollutants and synthesis value‐added chemicals through rational selection small molecules as substrates. Strategies small‐molecule electrocatalyst design are critical to electrocatalytic performance, focus on achieving high current density, selectivity, Faradaic efficiency, operational durability. This perspective discusses key factors required further advancement, including technoeconomic analysis, new reactor system design, meeting requirements industrial applications, bridging gap between fundamental research practical product detection separation. aims advance development hybrid electrolysis applications.

Язык: Английский

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Recent advances in the selective oxidation of glycerol to value-added chemicals via photocatalysis/photoelectrocatalysis

Green Chemistry, Год журнала: 2024, Номер 26(5), С. 2505 - 2524

Опубликована: Янв. 1, 2024

This work summarizes a review on the selective oxidation of glycerol via photocatalysis/photoelectrocatalysis. We elucidate unique reaction pathways induced by photo-generated reactive species from green chemistry point view.

Язык: Английский

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Low-frequency mechanical energy in the environment for energy production and piezocatalytic degradation of organic pollutants in water: A review

Journal of Water Process Engineering, Год журнала: 2023, Номер 56, С. 104312 - 104312

Опубликована: Сен. 19, 2023

Язык: Английский

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Electrochemical alcohol oxidation reaction on Precious‐Metal‐Free catalysts: Mechanism, activity, and selectivity

Carbon Neutralization, Год журнала: 2024, Номер 3(2), С. 285 - 312

Опубликована: Март 1, 2024

Abstract The electrochemical alcohol oxidation reaction (AOR) is pivotal for the development of sustainable energy. complete alcohols has attracted extensive attention as a vital process in fuel cells. Moreover, an alternative to oxygen evolution reaction, selective emerges effective means lower energy expenditure associated with electrolytic hydrogen production while yielding high‐value products. Nonprecious metal materials have been widely applied catalysis due their cost‐effectiveness and excellent durability. In recent years, leveraging advantages nonprecious electrocatalytic AOR, researchers delved into catalytic mechanisms various efficient catalysts fabricated evaluated. This review provides overview current advancements diverse systems centered around materials. It systematically summarizes shared traits distinctions characteristics across systems, thereby laying theoretical foundation developing novel catalyst that are efficient, stable, highly selective. will facilitate utilization further toward alcohols.

Язык: Английский

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