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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Boosting the performance of polymer electrolyte membrane fuel cells with porous flow fields: Pros and cons

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 134728 - 134728

Published: Jan. 1, 2025

Language: Английский

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Dual-Mode Sensor Based on a Single-Atom Cobalt Catalyst for Simultaneous Electrochemical and Colorimetric Detection of Bioactive Small Molecules

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

The design of single-atom catalysts with dual functions has emerged as a promising strategy for developing high-performance sensing platforms. Herein, we reported facile host-guest synthesizing an atomically dispersed Co catalyst (Co-N-C), where atoms were uniformly anchored on the N-doped carbon matrix derived from zeolitic imidazolate framework-8. as-prepared Co-N-C exhibits both excellent electrochemical and peroxidase-like colorimetric activities toward detection three important bioactive small molecules, ascorbic acid (AA), dopamine (DA), uric (UA). sensor demonstrated ultrahigh sensitivity limits 4.83, 1.36, 0.371 μM AA, DA, UA, respectively, along outstanding selectivity against common interferents stable performance. Meanwhile, method also showed analytical performance 2.24 3.09 2.97 results indicate that electronic modulation through precise nitrogen coordination enhances affinity Co-Nx target reactants, thereby promoting adsorption electron transfer throughout reaction. This improves catalytic efficiency selectivity, establishing dual-catalytic functionality material biosensing applications.

Language: Английский

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Ultrafast Conversion of Water and Oxygen Molecules With Dissociation of Hydrogen Bonding Effect to Achieve Extra‐High Energy Efficiency of Secondary Metal‐Air Batteries

Small, Journal Year: 2024, Volume and Issue: 20(46)

Published: Aug. 8, 2024

Abstract Metal‐air secondary batteries with ultrahigh specific energies have received vast attention and are considered new promising energy storage. The slow redox reactions between oxygen‐water molecules lead to low efficiency (55–71%) limited applications. Herein, it is proposed that the MIL‐68(In)‐derived porous carbon nanotube supports CoNiFeP heteroconjugated alloy catalyst an overboiling point electrolyte achieve oxidation rate of water molecules. Structural characterization density functional theory calculations reveal greatly reduces free process, further accelerates dissociation O─H hydrogen bonds, release O 2 molecules, achieving extra‐low overpotential 110 mV@10 mA cm −2 far lower than commercial Ir/C catalysts 192 mV at 125 °C state‐of‐the‐art. Furthermore, assembled rechargeable zinc‐air begins break through 85 °C, jumps 100 reaches 88.1% ultralow decay 0.0068% after 150 cycles superior those reported metal‐air batteries. This work provides a joint‐design strategy reexamines battery operating temperature construct higher for fuel cells.

Language: Английский

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Fe3Co nanoparticles embedded carbon nanotube complex as effective bifunctional electrocatalysts for rechargeable zinc-air batteries

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 500, P. 157309 - 157309

Published: Nov. 1, 2024

Language: Английский

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Synergy strategy of multi-metals confined in heteroatom framework toward constructing high-performance water oxidation electrocatalysts

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 680, P. 976 - 986

Published: Nov. 10, 2024

Language: Английский

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Electrochemical sensing of nitrite in drinking water using multi-walled carbon nanotubes modified platinum electrode

Published: Nov. 18, 2024

Aim: The scope of the present study was to elaborate a nitrite electrochemical sensor using multi-walled carbon nanotubes (MWCNTs) modified Pt electrode. Methods: electrocatalytic activity proposed studied by cyclic voltammetry (CV), chronoamperometry (ChAm), and impedance spectroscopy (EIS). Then detection performed square wave (SWV). Results: MWCNTs/Pt electrode exhibits good for oxidation in neutral pH. Subsequently, fabricated shows high sensitivity NO2– determination low limit (LOD) (0.1 µM) wide linear concentration range (1.0–1,000 µM). Conclusions: This has cost-effective, anti-interference capability as well stability, reproducibility, applicability.

Language: Английский

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Template-directed synthesis of Co, N-doped carbon spheres for efficient oxygen reduction reaction

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 172, P. 113678 - 113678

Published: Dec. 5, 2024

Language: Английский

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