Electrokinetic-mechanism of water and furfural oxidation on pulsed laser-interlaced Cu2O and CoO on nickel foam

Journal of Energy Chemistry, Год журнала: 2024, Номер 91, С. 145 - 154

Опубликована: Янв. 4, 2024

Язык: Английский

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Pulsed laser interference patterning of transition‐metal carbides for stable alkaline water electrolysis kinetics

Carbon Energy, Год журнала: 2024, Номер 6(5)

Опубликована: Янв. 5, 2024

Abstract We investigated the role of metal atomization and solvent decomposition into reductive species carbon clusters in phase formation transition‐metal carbides (TMCs; namely, Co 3 C, Fe TiC, MoC) by pulsed laser ablation Co, Fe, Ti, Mo metals acetone. The interaction between s – p ‐orbitals d‐orbitals causes a redistribution valence structure through charge transfer, leading to surface defects as observed X‐ray photoelectron spectroscopy. These influence evolved TMCs, making them effective for hydrogen oxygen evolution reactions (HER OER) an alkaline medium. C with more affinity promoted CoO(OH) intermediates, electrochemical oxidation O 4 was captured via situ/operando Raman probes, increasing number active sites OER activity. MoC d‐vacancies exhibits strong binding, promoting HER kinetics, whereas TiC defect states trap carriers may hinder both activities. results show that assembled membrane‐less electrolyzer C∥Co MoC∥MoC electrodes requires ~2.01 1.99 V, respectively, deliver 10 mA cm − 2 excellent structural stability. In addition, ascertained synthesis mechanism unit‐cell packing relations will open up sustainable pathways obtaining highly stable electrocatalysts electrolyzers.

Язык: Английский

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Optimizing hydrogen production by alkaline water decomposition with transition metal-based electrocatalysts

Environmental Chemistry Letters, Год журнала: 2023, Номер 21(5), С. 2583 - 2617

Опубликована: Июнь 3, 2023

Abstract Burning fossil fuels account for over 75% of global greenhouse gas emissions and 90% carbon dioxide emissions, calling alternative such as hydrogen. Since the hydrogen demand could reach 120 million tons in 2024, efficient large-scale production methods are required. Here we review electrocatalytic water splitting with a focus on reaction mechanisms, transition metal catalysts, optimization strategies. We discuss mechanisms decomposition evolution. Transition catalysts include alloys, sulfides, carbides, nitrides, phosphides, selenides, oxides, hydroxides, metal-organic frameworks. The can be optimized by modifying nanostructure or electronic structure. observe that metal-based electrocatalysts excellent due to their abundant sources, low cost, controllable structures. Concerning optimization, fluorine anion doping at 1 mol/L potassium hydroxide yields an overpotential 38 mV current density 10 mA/cm 2 . efficiency also enhanced adding atoms nickel sulfide framework.

Язык: Английский

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Advancements in transition bimetal catalysts for electrochemical 5-Hydroxymethylfurfural (HMF) oxidation

Journal of Energy Chemistry, Год журнала: 2024, Номер 98, С. 24 - 46

Опубликована: Июнь 24, 2024

Язык: Английский

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Recent advances in hydrogen production coupled with alternative oxidation reactions

Coordination Chemistry Reviews, Год журнала: 2024, Номер 509, С. 215777 - 215777

Опубликована: Март 26, 2024

Язык: Английский

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Constructing Mo-Co2P/Ni12P5 heterostructures as highly efficient electrocatalysts for overall water splitting

Journal of Power Sources, Год журнала: 2025, Номер 637, С. 236597 - 236597

Опубликована: Фев. 22, 2025

Язык: Английский

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Architecting the High‐Entropy Oxides on 2D MXene Nanosheets by Rapid Microwave‐Heating Strategy with Robust Photoelectrochemical Oxygen Evolution Performance

Small, Год журнала: 2023, Номер 19(27)

Опубликована: Март 28, 2023

High-entropy oxides (HEO) have recently concerned interest as the most promising electrocatalytic materials for oxygen evolution reactions (OER). In this work, a new strategy to synthesis of HEO nanostructures on Ti3 C2 Tx MXene via rapid microwave heating and subsequent calcination at low temperature is reported. Furthermore, influence loading investigated toward OER performance with without visible-light illumination in an alkaline medium. The obtained HEO/Ti3 -0.5 hybrid exhibited outstanding photoelectrochemical ability overpotential 331 mV 10 mA cm-2 small Tafel slope 71 dec-1 , which exceeded that commercial IrO2 catalyst (340 ). particular, fabricated water electrolyzer anode required less potential 1.62 V under illumination. Owing strong synergistic interaction between MXene, has great electrochemical surface area, many metal active sites, high conductivity, fast reaction kinetics, resulting excellent performance. This study offers efficient synthesizing HEO-based produce high-value hydrogen fuel.

Язык: Английский

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Metal recovery from industrial solid waste by ultrasonic-assisted hydrometallurgical leaching: a review

Environmental Chemistry Letters, Год журнала: 2024, Номер 22(4), С. 2055 - 2090

Опубликована: Май 6, 2024

Язык: Английский

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Impact of petroleum hydrocarbon and heavy metal pollution on coral reefs and mangroves: a review

Environmental Chemistry Letters, Год журнала: 2024, Номер 22(3), С. 1413 - 1435

Опубликована: Март 22, 2024

Язык: Английский

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Opportunities and challenges in biomass electrocatalysis and valorization

Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 358, С. 124404 - 124404

Опубликована: Июль 14, 2024

Язык: Английский

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