Modulating the electronic structure of Ni(OH)₂ by coupling with low-content Pt for boosting the urea oxidation reaction enables significantly promoted energy-saving hydrogen production

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(5), P. 1984 - 1996

Published: Jan. 1, 2024

A urea-assisted water splitting electrolyzer based on Pt nanoparticle-anchored Ni(OH) 2 @Ni-CNF catalyst and Pt@Ni-CNF is constructed for effectively reducing the energy consumption of H production.

Language: Английский

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Water‐Stable Fluorous Metal–Organic Frameworks with Open Metal Sites and Amine Groups for Efficient Urea Electrocatalytic Oxidation

Small, Journal Year: 2023, Volume and Issue: 19(43)

Published: June 27, 2023

Urea oxidation reaction (UOR) is one of the promising alternative anodic reactions to water that has attracted extensive attention in green hydrogen production. The application specifically designed electrocatalysts capable declining energy consumption and environmental consequences major challenges this field. Therefore, goal achieve a resistant, low-cost, environmentally friendly electrocatalyst. Herein, water-stable fluorinated Cu(II) metalorganic framework (MOF) {[Cu2 (L)(H2 O)2 ]·(5DMF)(4H2 O)}n (Cu-FMOF-NH2 ; H4 L = 3,5-bis(2,4-dicarboxylic acid)-4-(trifluoromethyl)aniline) developed utilizing an angular tetracarboxylic acid ligand incorporates both trifluoromethyl (-CF3 ) amine (-NH2 groups. tailored structure Cu-FMOF-NH2 where linkers are connected by fluoride bridges surrounded dicopper nodes reveals 4,24T1 topology. When employed as electrocatalyst, requires only 1.31 V versus reversible electrode (RHE) deliver 10 mA cm-2 current density 1.0 m KOH with 0.33 urea electrolyte delivered even higher (50 at 1.47 RHE. This performance superior several reported catalysts including commercial RuO2 catalyst overpotential 1.52 investigation opens new opportunities develop utilize pristine MOFs potential electrocatalyst for various catalytic reactions.

Language: Английский

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MOF‐derived Carbon‐Based Materials for Energy‐Related Applications

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract New carbon‐based materials (CMs) are recommended as attractively active due to their diverse nanostructures and unique electron transport pathways, demonstrating great potential for highly efficient energy storage applications, electrocatalysis, beyond. Among these newly reported CMs, metal–organic framework (MOF)‐derived CMs have achieved impressive development momentum based on high specific surface areas, tunable porosity, flexible structural‐functional integration. However, obstacles regarding the integrity of porous structures, complexity preparation processes, precise control components hinder regulation interface engineering in CMs. In this context, review systematically summarizes latest advances tailored types, processing strategies, energy‐related applications MOF‐derived focuses structure‐activity relationship metal‐free carbon, metal‐doped metallide‐doped carbon. Particularly, intrinsic correlation evolutionary behavior between synergistic interaction micro/nanostructures species with electrochemical performances emphasized. Finally, insights perspectives relevant research presented, future prospects challenges discussed, providing valuable guidance boost high‐performance electrodes a broader range application fields.

Language: Английский

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Multiscale Structural Engineering of a Multilayered Nanoarray Electrode Realizing Boosted and Sustained Oxygen Evolution Catalysis in Seawater Electrolysis

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(23), P. 15360 - 15374

Published: Nov. 13, 2023

Seawater electrolysis is promising for large-scale H2 production, yet it bottlenecked by the lack of a high-performing anode with favorable activity, desirable selectivity toward oxygen evolution reaction (OER), and strong resistance against chloride corrosion. Herein, we propose multiscale structural engineering strategy to construct multilayered heterostructured OER electrode an amorphous FeOOH overlayer coated on crystalline Mo-doped Co0.85Se nanosheet array aligned 3D macroporous Ni foam. In such designed NF/(CoMo)0.85Se@FeOOH electrode, integration aliovalent conductive active nonconductive into crystalline–amorphous heterostructure, unique hierarchical sheet-on-sheet nanoarray configuration, can not only give rise proliferated catalytic sites enhanced intrinsic activity via electronic manipulation but also boost mass transfer account fascinating surface superhydrophilic superaerophobic features. Impressively, architecture comprising inherently anticorrosive (CoMo)0.85Se core shell, together in situ formed transition metal (oxy)hydroxide outmost layer enriched polyatomic anions (MoOxn– SeOxn–), collectively contribute commendable mechanical stability chloride-corrosion during harsh seawater oxidation. This work highlights potent paradigm high-efficiency, corrosion-resistive, OER-selective stable ingenious systematical engineering.

Language: Английский

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Manganese-facilitated dynamic active-site generation on Ni2P with self-termination of surface reconstruction for urea oxidation at high current density

Water Research, Journal Year: 2024, Volume and Issue: 253, P. 121266 - 121266

Published: Feb. 13, 2024

Language: Английский

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Tuning the Fe–N4 electrocatalytic CH3NO2 reduction reaction based on axial ligands: A computational study

Materials Today Sustainability, Journal Year: 2024, Volume and Issue: 25, P. 100683 - 100683

Published: Jan. 23, 2024

Language: Английский

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Regulating the electronic structure of Ni3Se4-MoSe2 by coupling with ZIF-derived Co@C promotes boosted urea-assisted water splitting at industrial current density

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 499, P. 156647 - 156647

Published: Oct. 12, 2024

Language: Английский

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Hydrogen evolution electrodes: Materials and mechanisms in alkaline electrolysis

Desalination, Journal Year: 2024, Volume and Issue: 586, P. 117887 - 117887

Published: June 28, 2024

Language: Английский

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Interfacial amine-assisted electrodeposition of superhydrophilic/superaerophobic metal hydroxides for robust oxygen evolution catalysis

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

Language: Английский

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Cutting‐Edge Optimization Strategies and In Situ Characterization Techniques for Urea Oxidation Reaction Catalysts: A Comprehensive Review

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

Abstract Urea electrolysis presents an eco‐friendly, cost‐effective method for hydrogen (H 2 ) production and pollution control. However, its efficiency is limited by a slow 6‐electron transfer process, necessitating advanced electrocatalysts to accelerate the urea oxidation reaction (UOR) moderate overpotential, thereby cutting energy losses. Developing efficient, affordable vital practical (UE) improving UOR kinetics. Optimizing requires creating highly active sites, enhancing electrical conductivity, manipulating electronic structures improved electron intermediate binding affinities. This review explores recent advances in catalyst design, focusing on transition metal‐based catalysts, including nanostructures, phases, defects, heterostructures, alloys, composites. It underscores importance of understanding structure‐performance relationships, surface reconstruction phenomena, mechanisms through situ characterization. Additionally, it critically assesses challenges catalysis provides insights developing high‐performance electrocatalysts. The finishes with perspectives future research directions green generation via electrolysis.

Language: Английский

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