Ir Nanoparticles Anchored on Metal‐Organic Frameworks for Efficient Overall Water Splitting under pH‐Universal Conditions

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(17)

Published: March 2, 2023

The construction of high-activity and low-cost electrocatalysts is critical for efficient hydrogen production by water electrolysis. Herein, we developed an advanced electrocatalyst anchoring well-dispersed Ir nanoparticles on nickel metal-organic framework (MOF) Ni-NDC (NDC: 2,6-naphthalenedicarboxylic) nanosheets. Benefiting from the strong synergy between MOF through interfacial Ni-O-Ir bonds, synthesized Ir@Ni-NDC showed exceptional electrocatalytic performance evolution reaction (HER), oxygen (OER) overall splitting in a wide pH range, superior to commercial benchmarks most reported electrocatalysts. Theoretical calculations revealed that charge redistribution bridge induced optimization H2 O, OH* H* adsorption, thus leading accelerated electrochemical kinetics HER OER. This work provides new clue exploit bifunctional pH-universal splitting.

Language: Английский

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Structure–property–performance relationship of vanadium- and manganese-based metal–organic frameworks and their derivatives for energy storage and conversion applications

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(19), P. 11149 - 11175

Published: Jan. 1, 2024

The current review discusses on vanadium- and manganese-based metal–organic frameworks their derivatives for energy storage conversion applications along with the potential future advancements in these fields.

Language: Английский

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Review of irradiation treatments on MOFs and COFs: Synthesis, modification, and application

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 339, P. 126636 - 126636

Published: Feb. 4, 2024

Language: Английский

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Tandem Catalysts Enabling Efficient C−N Coupling toward the Electrosynthesis of Urea

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(23)

Published: April 6, 2024

Abstract The development of a methodology for synthesizing value‐added urea (CO(NH 2 ) via renewable electricity‐driven C−N coupling reaction under mild conditions is highly anticipated. However, the complex catalytic active sites that act on carbon and nitrogen species make mechanism unclear, resulting in low efficiency from co‐reduction dioxide (CO nitrate (NO 3 − ). Herein, we propose novel tandem catalyst Mo‐PCN‐222(Co), which Mo serve to facilitate reduction *NH intermediate, while Co enhance CO carbonic oxide (CO), thus synergistically promoting coupling. synthesized Mo‐PCN‐222(Co) exhibited noteworthy yield rate 844.11 mg h −1 g , alongside corresponding Faradaic 33.90 % at −0.4 V vs. reversible hydrogen electrode (RHE). By combining situ spectroscopic techniques with density functional theory calculations, demonstrate efficient attributed system *CO intermediates produced by stabilize formation *CONH intermediate. This study provides an effective avenue design synthesis catalysts electrocatalytic synthesis.

Language: Английский

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Hierarchically Ordered Pore Engineering of Metal–Organic Framework‐Based Materials for Electrocatalysis

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(27)

Published: April 17, 2024

Abstract Ordered pore engineering that embeds uniform pores with periodic alignment in electrocatalysts opens up a new avenue for achieving further performance promotion. Hierarchically ordered porous metal–organic frameworks (HOP‐MOFs) possessing multilevel distribution are the promising precursors exploration of electrocatalysts, while scalable acquisition HOP‐MOFs editable components and adjustable size regimes is critical. This review presents recent progress on hierarchically MOF‐based materials enhanced electrocatalysis. The synthetic strategies different regimes, including self‐assembly guided by reticular chemistry, surfactant, nanoemulsion, nanocasting, first introduced. Then applications as exploring summarized, selecting representatives to highlight boosted performance. Especially, intensification molecule ion transport integrated optimized electron transfer site exposure over derivatives emphasized clarify directional integration effect endowed engineering. Finally, remaining scientific challenges an outlook this field proposed. It hoped will guide nanocatalysts boosting catalytic promoting practical applications.

Language: Английский

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Mesopore and macropore engineering in metal–organic frameworks for energy environment-related applications

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(9), P. 4931 - 4970

Published: Jan. 1, 2024

The fabrication strategies of mesopores and macropores in metal–organic frameworks (MOFs) their emerging applications are summarized. In addition, the challenges future perspectives pore engineering MOF design also indicated.

Language: Английский

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Multifunctional methyl orange-delaminated Ti3C2 MXene for non-enzymatic/metal-free electrochemical detection of hydrogen peroxide and hydrazine

Microchemical Journal, Journal Year: 2024, Volume and Issue: 205, P. 111382 - 111382

Published: Aug. 8, 2024

Language: Английский

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MOF-Based Electrocatalysts: An Overview from the Perspective of Structural Design

Chemical Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

The electrocatalytic technique, as an efficient energy storage and conversion technology, has attracted significant attention to address exhaustion environmental pollution. Usually, the activity selectivity of reactions are largely dominated by dynamic process occurring on electrocatalysts. Therefore, high-performance electrocatalysts, which can dominate pathway barrier reactions, great significance for advancement technique. Metal-organic frameworks (MOFs), emerging crystalline porous materials, present structural component advantages including well-defined structure, high surface area, large porosity, diverse components, easy tailorability, demonstrating fantastic potential precise fabrication In this Review, strategies in electrocatalysts based MOF-related materials specifically introduced from aspects catalytic site design microenvironment modulation around sites. Furthermore, representative progress achieved various applications employing MOF-based is systematically summarized, with special emphasis MOFs performance optimization. Finally, remaining challenges future perspectives further highlighted.

Language: Английский

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Revolutionizing catalytic water treatment: A critical review on the role of 3D printed catalysts

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132194 - 132194

Published: Feb. 1, 2025

Language: Английский

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Enhanced CO₂ Electroreduction Selectivity toward Ethylene on Pyrazolate-Stabilized Asymmetric Ni–Cu Hybrid Sites

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(48), P. 26444 - 26451

Published: Nov. 22, 2023

Metal-organic frameworks (MOFs) possess well-defined, designable structures, holding great potential in enhancing product selectivity for electrochemical CO2 reduction (CO2R) through active site engineering. Here, we report a novel MOF catalyst featuring pyrazolate-stabilized asymmetric Ni/Cu sites, which not only maintains structural stability under harsh conditions but also exhibits extraordinarily high ethylene (C2H4) during CO2R. At cathode of -1.3 V versus RHE, our catalyst, denoted as Cu1Ni-BDP, manifests C2H4 Faradaic efficiency (FE) 52.7% with an overall current density 0.53 A cm-2 1.0 M KOH electrolyte, surpassing that on prevailing Cu-based catalysts. More remarkably, the Cu1Ni-BDP stable performance 4.5% FE 25 h electrolysis. suite characterization tools─such high-resolution transmission electron microscopy, X-ray absorption spectroscopy, operando diffraction, and infrared spectroscopy─and functional theory calculations collectively reveal cubic pyrazolate-metal coordination structure Ni-Cu sites synergistically facilitate formation from CO2.

Language: Английский

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