Tuning the Activity and Stability of CoCr-LDH by Forming a Heterostructure on Surface-Oxidized Nickel Foam for Enhanced Water-Splitting Performance

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(5), С. 5965 - 5976

Опубликована: Янв. 24, 2024

The development of low-cost, efficient catalysts for electrocatalytic water splitting to generate green hydrogen is a hot topic among researchers. Herein, we have developed highly heterostructure CoCr-LDH on NiO nickel foam (NF) the first time. preparation strategy follows simple annealing cleaned NF without using any Ni salt precursor, followed by growth nanosheets over surface-oxidized NF. CoCr-LDH/NiO/NF catalyst shows excellent activity and stability toward oxygen evolution reaction (OER) (HER) in 1 M KOH solution. For OER, only 253 mV HER, 185 overpotentials are required attain 50 mA cm

Язык: Английский

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Regulating the selective adsorption of OH* over the equatorial position of Co₃O₄via doping of Ru ions for efficient water oxidation reaction

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(40), С. 21767 - 21779

Опубликована: Янв. 1, 2023

The synthesized Ru-Co 3 O 4 delivers a high performance towards the OER in alkaline (292 mV) and acidic (365 media. Structural optimization demonstrates distortion of bond length favours selective adsorption OH − which facilitates OER.

Язык: Английский

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Multi-Active Sites Loaded NiCu-MOF@MWCNTs as a Bifunctional Electrocatalyst for Electrochemical Water Splitting Reaction

Langmuir, Год журнала: 2024, Номер 40(18), С. 9509 - 9519

Опубликована: Апрель 22, 2024

Water can be sustainably and ecologically converted by electrocatalysts into hydrogen oxygen, which, in turn, energy. However, the advancement of using water as green energy is hampered limitations study high-performance catalysts. The purpose this was to construct an electrocatalyst anchoring well-dispersed multiwalled carbon nanotubes (MWCNTs) on nickel–copper (NiCu-MOF) nanoblocks through a simple solvothermal method. synthesis NiCu-MOF@MWCNTs demonstrated exceptional electrocatalytic performance for evolution reaction (HER) oxygen (OER) alkaline medium. At 10 mA cm–2 1.0 M KOH, OER HER catalyst displays relatively low overpotential, with only 220 78 mV, respectively. Furthermore, catalytic activity remained unchanged 24 h KOH. This superior majority that have been reported. achieved utilizing strong synergy exists between MWCNTs bimetallic (Ni–Cu) nano blocks present metal–organic framework. enhanced nanocomposite attributed synergistic impact caused its various components.

Язык: Английский

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Development of noble metal-free electrocatalysts towards acidic water oxidation: From fundamental understanding to state-of-the-art catalysts

eScience, Год журнала: 2024, Номер unknown, С. 100295 - 100295

Опубликована: Июль 1, 2024

The development of low-cost and efficient electrocatalysts for oxygen evolution reaction (OER) in acid electrolytes is critical to the widespread implementation proton electrolyte membrane water electrolyzers (PEMWE) towards carbon neutralization. Noble metal Ir- Ru-based materials are state-of-the-art catalysts but still suffer from prohibitive price scarcity. In this context, a variety noble metal-free have been developed decrease cost PEMWE. review, we first summarize activity expression mechanism stability issues non-precious catalysts, highlighting origins performance degradation possible mitigation strategies. Then, systematically review several recently focusing on design rationale structure-performance relation. Finally, prospects non-noble prospected, with potential challenges practical applications presented.

Язык: Английский

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Metal-organic frameworks-based single-atom catalysts: From synthesis to sustainable electrocatalytic systems

Materials Today Chemistry, Год журнала: 2024, Номер 37, С. 102035 - 102035

Опубликована: Март 29, 2024

Язык: Английский

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P-doped Co-based nanoarray heterojunction with multi-interfaces for complementary HER/OER electrocatalysts towards high-efficiency overall water splitting in alkaline

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 64, С. 935 - 946

Опубликована: Апрель 1, 2024

Язык: Английский

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Sol–gel-derived nanostructured electrocatalysts for oxygen evolution reaction: a review

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(31), С. 19720 - 19756

Опубликована: Янв. 1, 2024

This review, for the first time, provides concise insights into synthetic methods, material characterization, and recent strategies boosting OER activity of various sol–gel-derived composites paving way subsequent research.

Язык: Английский

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Sulfur-modified MOFs as efficient electrocatalysts for overall water splitting

Coordination Chemistry Reviews, Год журнала: 2024, Номер 520, С. 216144 - 216144

Опубликована: Авг. 14, 2024

Язык: Английский

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Metal organic frameworks for wastewater treatment, renewable energy and circular economy contributions

npj Clean Water, Год журнала: 2024, Номер 7(1)

Опубликована: Ноя. 30, 2024

Metal-Organic Frameworks (MOFs) are versatile materials with tailorable structures, high surface areas, and controlled pore sizes, making them ideal for gas storage, separation, catalysis, notably wastewater treatment by removing pollutants like antibiotics heavy metals. Functionalization enhances their applications in energy conversion environmental remediation. Despite challenges stability cost, ongoing innovation MOFs contributes to the circular economy aligns Sustainable Development Goals.

Язык: Английский

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Metalation-Induced Triazine-Based Covalent Organic Framework as a High Performance Electrocatalyst for Oxygen and Hydrogen Evolution Reactions

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(9), С. 4111 - 4120

Опубликована: Май 1, 2024

The pursuit of efficient and functionalized covalent organic framework (COF) nanomaterials holds significant importance given their potential applications across various fields. Notably, relevance extends to the sustainable production hydrogen, a promising future fuel, through water electrolysis. A β-ketamine-functionalized COF was prepared using Schiff base condensation 1,3,5-triformylphloroglucinol 1,3,5-tris(4-aminophenyl)triazine. as-prepared β-ketamine-linked chosen as precursor for postsynthetic modification, where β-ketamine moieties were effectively coordinated with metal ions such nickel (Ni), cobalt (Co), iron (Fe), resulting in functional metal-coordinated complexes designated Ni-COF, Co-COF, Fe-COF, respectively, electrocatalytic activity toward oxygen evolution reaction (OER) hydrogen (HER) systematically investigated. ensuing Ni-COF demonstrates significantly greater OER HER compared Co-COF Fe-COF. For HER, 0.5 M H2SO4 solution, requires an overpotential 208 mV achieve 10 mA cm–2 current density. OER, demands 302 reach same density 1 KOH surpassing state-of-the-art catalyst, RuO2, which required 370 attain Also, turnover frequency increases approximately 5 times bare material. Moreover, electrocatalyst exhibited excellent stability 24 h both demonstrating its superiority these reactions. This study underscores metalation-induced COF-based materials processes.

Язык: Английский

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