Engineering MOF@LDH heterojunction with strong interfacial built-in electric field towards enhanced electrocatalytic water oxidation

Fuel, Journal Year: 2024, Volume and Issue: 377, P. 132796 - 132796

Published: Aug. 17, 2024

Language: Английский

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Enhancing interfacial electron transfer through PANI electron bridge for tailoring dynamic reconstruction and achieving high-performance water oxidation

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 158 - 166

Published: July 30, 2024

Language: Английский

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Constructing Built‐in‐Electric Field for Boosting Electrocatalytic Water Splitting

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: June 4, 2024

Abstract Electrocatalytic water splitting shows great potential for producing clean and green hydrogen, but it is hindered by slow reaction kinetics. Advanced electrocatalysts are needed to lower the energy barriers. The establishment of built‐in electric fields (BIEF) in heterointerfaces has been found be beneficial speeding up electron transfer, increasing electrical conductivity, adjusting local environment, optimizing chemisorption with intermediates. Engineering modifying BIEF heterojunctions offer significant opportunities enhance electronic properties catalysts, thus improving This comprehensive review focuses on latest advances engineering heterojunction catalysts efficient electrolysis. It highlights fundamentals, engineering, modification, characterization, application electrocatalytic splitting. also discusses challenges future prospects engineering. Overall, this provides a thorough examination next generation electrolysis devices.

Language: Английский

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Modulating Built‐In Electric Field Via N‐Doped Carbon Dots for Robust Oxygen Evolution at Large Current Density

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Constructing a built-in electric field (BIEF) within heterostructures has emerged as compelling strategy for advancing electrocatalytic oxygen evolution reaction (OER) performance. Herein, the p-n type nanosheet array heterojunction Ni2P-NCDs-Co(OH)2-NF are successfully prepared. The variation in interaction affinity between nitrogen N-doped carbon dots (NCDs) and Ni/Co induces charge redistribution Co Ni Ni2P-NCDs-Co(OH)2-NF-3 heterostructure, thereby enhancing intensity of BIEF, facilitating electron transfer, markedly improving OER activity. optimized electrocatalyst, Ni2P-NCDs-Co(OH)2-NF-3, demonstrates remarkably low overpotential 389 mV at 500 mA cm-2, alongsides small Tafel slope 65 dec-1, expansive electrochemical active surface area (ECSA), impedance, outstanding stability exceeding 425 h Faradaic efficiency up to 96%. In situ Raman spectroscopy density functional theoretical (DFT) calculations elucidate mechanism, revealing that enhanced BIEF optimizes adsorption energy Co3+ OH- weakened desorption during reaction. work ponieeringly employed NCDs regulator effectively tuning achieving superior performance under large current density, thus charting new pathways development high-efficiency electrocatalysts.

Language: Английский

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Porous High-Entropy phosphides with multiple active sites for Synergistically promoting electrocatalytic oxygen evolution reaction

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163090 - 163090

Published: March 1, 2025

Language: Английский

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Multicomponent Interface and Electronic Structure Engineering in Ir-Doped CoMO₄–Co(OH)₂ (M = W and Mo) Enable Promoted Oxygen Evolution Reaction

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(34), P. 16037 - 16046

Published: Aug. 9, 2024

The core principles of multicomponent interface and electronic structure engineering are essential in designing high-performance catalysts for the oxygen evolution reaction (OER). However, combining these aspects within a catalyst is significant challenge. In this investigation, novel approach involving development hybrid Ir-doped CoMO4–Co(OH)2 (M = W Mo) hollow nanoboxes was introduced, enabling remarkably efficient water oxidation electrocatalysis. Constructed from ultrathin nanosheet-assembled nanoboxes, structures boast wealth active centers intermediate species, which turn enhance both charge transfer mass transport capabilities. Moreover, compelling synergistic effects arising interaction between CoMO4 Co(OH)2 significantly bolster OER electrocatalysis by facilitating electron transfer. introduction Ir atoms serves to strategically adjust structure, fine-tune its state, operate as electrocatalysis, thus diminishing overpotential. This configuration results Ir-CoWO4–Co(OH)2 Ir-CoMoO4–Co(OH)2 exhibiting impressively low overpotentials 252 261 mV, respectively, 10 mA cm–2. Utilized conjunction with Pt/C two-electrode system overall splitting, mere 1.53 V cell potential needed achieve desired cm–2 current density.

Language: Английский

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Reconstruction of Ni-based catalyst for electrocatalytic urea oxidation reaction

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1012, P. 178477 - 178477

Published: Jan. 1, 2025

Language: Английский

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Mechanism and research progress of hydrogen spillover in hydrogen evolution reaction

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1004, P. 175883 - 175883

Published: Aug. 6, 2024

Language: Английский

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Organic-inorganic hybrid interfaces with π-d electron coupling for preventing metal and sulfur leaching toward enhanced oxygen evolution reaction

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 670, P. 288 - 296

Published: May 16, 2024

Language: Английский

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Tungsten Oxide-Based Electrocatalysts for Energy Conversion

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review reports a summary of the recent progress in WO x -based catalyst for electrocatalytic reactions, emphasizing their crucial roles as active species, electron-transfer and hydrogen spillover carriers, microenvironment regulators.

Language: Английский

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