Enhanced electrochemical activity of Co3O4/Co9S8 heterostructure catalyst for water splitting

International Journal of Hydrogen Energy, Год журнала: 2021, Номер 47(72), С. 30970 - 30980

Опубликована: Дек. 8, 2021

Язык: Английский

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Simultaneous electrical and defect engineering of nickel iron metal-organic-framework via co-doping of metalloid and non-metal elements for a highly efficient oxygen evolution reaction

Chemical Engineering Journal, Год журнала: 2022, Номер 439, С. 135720 - 135720

Опубликована: Март 10, 2022

Язык: Английский

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Corrosion engineering boosting bulk Fe50Mn30Co10Cr10 high-entropy alloy as high-efficient alkaline oxygen evolution reaction electrocatalyst

Journal of Material Science and Technology, Год журнала: 2021, Номер 109, С. 267 - 275

Опубликована: Окт. 9, 2021

Язык: Английский

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Flower-like Co3O4@NiFe-LDH nanosheets enable high-performance bifunctionality towards both electrocatalytic HER and OER in alkaline solution

Journal of Alloys and Compounds, Год журнала: 2022, Номер 919, С. 165877 - 165877

Опубликована: Июнь 15, 2022

Язык: Английский

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Boosted electron-transfer/separation of SnO2/CdSe/Bi2S3 heterostructure for excellent photocatalytic degradation of organic dye pollutants under visible light

Surfaces and Interfaces, Год журнала: 2022, Номер 31, С. 102012 - 102012

Опубликована: Май 1, 2022

Язык: Английский

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Enhancing the catalytic OER performance of MoS₂ via Fe and Co doping

Nanoscale, Год журнала: 2022, Номер 14(43), С. 16148 - 16155

Опубликована: Янв. 1, 2022

Enhancing the sluggish kinetics of electrochemical oxygen evolution reaction (OER) is crucial for many clean-energy production technologies. Although much progress has been made in recent years, developing active, stable, and cost-effective OER electrocatalysts still challenging. The layered MoS2, based on Earth-abundant elements, widely explored as a promising hydrogen electrocatalyst but exhibits poor activity. Here, we report facile strategy to improve MoS2 through co-doping nanosheets with Fe Co atoms. synergistic effect obtained by adjusting Co/Fe ratio Fe-Co doped induces electronic structural modifications richer active surface area morphology resulting relatively low overpotential 380 mV (at 10 mA cm-2). modulation upon doping was further supported DFT calculations that show favorable interaction intermediate species, thus reducing energy barrier OER. This work paves way future strategies tailoring properties transition-metal dichalcogenides (TMDCs) activate structure assistance non-noble-metal materials.

Язык: Английский

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Recent advances in iron-based sulfides electrocatalysts for oxygen and hydrogen evolution reaction

Chinese Chemical Letters, Год журнала: 2023, Номер 35(1), С. 108900 - 108900

Опубликована: Авг. 9, 2023

Язык: Английский

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Copper-based electro-catalytic nitrate reduction to ammonia from water: Mechanism, preparation, and research directions

Environmental Science and Ecotechnology, Год журнала: 2023, Номер 20, С. 100383 - 100383

Опубликована: Дек. 28, 2023

Global water bodies are increasingly imperiled by nitrate pollution, primarily originating from industrial waste, agricultural runoffs, and urban sewage. This escalating environmental crisis challenges traditional treatment paradigms necessitates innovative solutions. Electro-catalysis, especially utilizing copper-based catalysts, known for their efficiency, cost-effectiveness, eco-friendliness, offer a promising avenue the electro-catalytic reduction of to ammonia. In this review, we systematically consolidate current research on diverse including pure Cu, Cu alloys, oxides, single-atom entities, composites. Furthermore, assess catalytic performance, operational mechanisms, future directions find effective, long-term solutions purification ammonia synthesis. Electro-catalysis technology shows potential in mitigating pollution has strategic importance sustainable management. As application, regarding complexity real water, scale-up commerical efficient collection produced NH

Язык: Английский

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The Marriage of Hydrazone‐Linked Covalent Organic Frameworks and MXene Enables Efficient Electrocatalytic Hydrogen Evolution

Small Structures, Год журнала: 2023, Номер 5(1)

Опубликована: Сен. 26, 2023

Electrochemical water splitting is long regarded as a green and feasible pathway to realize the scalable hydrogen production, while overall evolution reaction (HER) efficiency largely dependent on electrocatalytic ability of cathode catalysts. Herein, in situ growth hydrazone‐linked covalent organic framework (COF‐42) nanocrystals with unique nanoflower‐shaped morphology 2D ultrathin Ti 3 C 2 T x MXene nanosheets (COF/Ti ) achieved through convenient robust stereoassembly strategy. Strikingly, marriage COF‐42 not only offers multiscale porous channels for fast transportation electrolyte electrons, but also enables full exposure activation numerous catalytically active centers. As consequence, optimized COF/Ti nanoarchitecture displays exceptional HER properties terms very low onset potential 19 mV, small Tafel slope 50 mV dec −1 well reliable long‐term durability, which are comparable those commercial Pt/C catalyst. Density functional theory calculations further disclose that rational combination provides more diversified positions appropriate Δ G H values, thus leading boosted generation rate.

Язык: Английский

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Metal–organic framework and carbon hybrid nanostructures: Fabrication strategies and electrocatalytic application for the water splitting and oxygen reduction reaction

Deleted Journal, Год журнала: 2023, Номер 2, С. e9120078 - e9120078

Опубликована: Май 24, 2023

With the rapid development of economy, increasing energy crisis and environmental pollution urge us to develop sustainable clean novel systems. Among them, electrochemical conversion technology is considered as one ideal potential alternative systems, electrocatalysts play critical roles but are still challenging. Metal-organic frameworks (MOFs), thanks their regular channels, atomically dispersed active centers, adjustable chemical pore environments, have severed promising for conversion. However, relatively low conductivities instabilities MOFs limit wide application in this field. In case, fabricating hybrids carbon-based materials an effective way overcome above deficiencies. addition, synergistic effects between carbons could optimize electronic structures sites promote surface areas, thus improve electrocatalytic performances composites. Herein, we outline current MOF/carbon composites, including fabrication methods hybridized with various dimensions electrocatalysis utilization water splitting, hydrogen evolution reaction (HER), oxygen (OER), reduction (ORR). Finally, advantages challenges such catalysts highlighted future endeavors on composites HER, OER ORR discussed.

Язык: Английский

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