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, Год журнала: 2024, Номер 17(5), С. 1984 - 1996

Опубликована: Янв. 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.

Язык: Английский

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

Small, Год журнала: 2023, Номер 19(43)

Опубликована: Июнь 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.

Язык: Английский

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

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 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.

Язык: 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, Год журнала: 2023, Номер 13(23), С. 15360 - 15374

Опубликована: Ноя. 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.

Язык: 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, Год журнала: 2024, Номер 253, С. 121266 - 121266

Опубликована: Фев. 13, 2024

Язык: Английский

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

Materials Today Sustainability, Год журнала: 2024, Номер 25, С. 100683 - 100683

Опубликована: Янв. 23, 2024

Язык: 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, Год журнала: 2024, Номер 499, С. 156647 - 156647

Опубликована: Окт. 12, 2024

Язык: 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, Год журнала: 2025, Номер unknown

Опубликована: Март 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.

Язык: Английский

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Surface Engineering over Metal–Organic Framework Nanoarray to Realize Boosted and Sustained Urea Oxidation

Small, Год журнала: 2023, Номер 19(49)

Опубликована: Авг. 13, 2023

Facilitating C─N bond cleavage and promoting *COO desorption are essential yet challenging in urea oxidation reactions (UORs). Herein a novel interfacial coordination assembly protocol is established to modify the Co-phytate complex on Ni-based metal-organic framework (MOF) nanosheet array (CC/Ni-BDC@Co-PA) toward boosted sustained UOR electrocatalysis. Comprehensive experimental theoretical investigations unveil that surface Co-PA modification over Ni-BDC can manipulate electronic state of Ni sites, situ evolved charge-redistributed promote adsorption subsequent cleavage. Impressively, functionalization impart negatively charged catalyst with improved aerophobicity, not only weakening CO2 departure, but also repelling CO32- approaching deactivate species, eventually alleviating poisoning enhancing operational durability. Beyond that, hydrophilic aerophobic characteristics would contribute better mass transfer kinetics. Consequently, CC/Ni-BDC@Co-PA exhibits prominent performance an ultralow potential 1.300 V versus RHE attain 10 mA cm-2 , small Tafel slope 45 mV dec-1 strong durability, comparable best electrocatalysts documented thus far. This work affords paradigm construct MOF-based materials for promoted catalysis through elegant engineering based metal-PA complex.

Язык: Английский

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Hierarchical Superhydrophilic/Superaerophobic Ni(OH)₂@NiFe-PBA Nanoarray Supported on Nickel Foam for Boosting the Oxygen Evolution Reaction

Inorganic Chemistry, Год журнала: 2023, Номер 63(1), С. 642 - 652

Опубликована: Дек. 22, 2023

The design of hierarchical electrocatalysts with plentiful active sites and high mass transfer efficiency is critical to efficiently sustainably carrying out the oxygen evolution reaction (OER), which presents a challenging pressing need. In this study, Ni(OH)

Язык: Английский

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