Homogeneous NiMoO4–Co(OH)2 bifunctional heterostructures for electrocatalytic oxygen evolution and urea oxidation reaction

International Journal of Hydrogen Energy, Год журнала: 2023, Номер 48(89), С. 34740 - 34749

Опубликована: Июнь 10, 2023

Язык: Английский

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Concurrent alloying and vacancy engineering for intensifying hydrogen spillover towards alcohol–water co-electrolysis

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(33), С. 17609 - 17615

Опубликована: Янв. 1, 2023

A PdRu–RuO 2 heterostructure with a well-defined PdRu alloy and oxygen-vacancy-enriched RuO is constructed to intensify the hydrogen spillover from Ru .

Язык: Английский

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D‐Orbital Manipulated Ru Nanoclusters for High‐Efficiency Overall Water Splitting at Industrial‐Level Current Densities

Advanced Functional Materials, Год журнала: 2023, Номер 34(7)

Опубликована: Окт. 30, 2023

Abstract Owing to the Pt‐like electrocatalytic capability and moderate price, Ru‐based catalysts are considered as Pt alternatives for electrochemical water splitting. However, they demonstrate limited catalytic performance under industrial‐level current densities. Herein, a novel electrocatalyst with an extremely low amount (0.85 wt.%) of Ru nanoclusters anchored on Cr‐doped Fe‐metal–organic frameworks (Ru@Cr─FeMOF) through robust Cr─O─Ru bond is presented. The study unveils that such architecture facilitates fast electron transfer manipulates highest occupied d orbital d‐band centers sites, favoring both oxygen evolution reaction (OER) hydrogen (HER) catalysis. as‐prepared catalyst performs excellent activity 21 mV@10 mA cm −2 HER 230 mV@50 OER in alkaline solution, realizes water‐splitting at densities (1.72 V@1000 ), surpassing state‐of‐the‐art literatures.

Язык: Английский

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Engineering defective trimetallic metal–organic framework nanosheets for advanced water oxidation electrocatalysis

Dalton Transactions, Год журнала: 2023, Номер 52(24), С. 8466 - 8472

Опубликована: Янв. 1, 2023

Limited by single metal active sites and low electrical conductivity, designing nickel-based metal-organic framework (MOF) materials with high activity durability remains a challenge. Here, novel class of two-dimensional trimetallic MOF nanosheets plentiful sites, rich defects, facilitated mass electron transfer channels is developed as efficient electrocatalysts for boosting oxygen evolution reaction (OER). The unique 2D nanosheet structure enlarges the area; meanwhile, organic ligand in can work pillar to enlarge interplanar space boost ion transportation, synergistic effect between multi-metal effectively promote electrocatalytic activity. Interestingly, after an electrochemical activation process, optimized NiFeZn yield abundant enabling them deliver overpotential 233 mV at 10 mA cm-2 much smaller Tafel slope 37.8 dec-1. More importantly, this method also universal synthesis NiFe-MOF family achieving outstanding OER performance. These findings present strategy construction OER.

Язык: Английский

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Encapsulation of ruthenium oxide nanoparticles in nitrogen-doped porous carbon polyhedral for pH-universal hydrogen evolution electrocatalysis

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 74, С. 10 - 16

Опубликована: Июнь 12, 2024

Язык: Английский

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Carbon nanocages confined multicomponent phosphide heterostructures for boosting oxygen evolution reaction in alkaline water and seawater

International Journal of Hydrogen Energy, Год журнала: 2023, Номер 48(97), С. 38324 - 38334

Опубликована: Июнь 30, 2023

Язык: Английский

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Breakthroughs and prospects in ruthenium-based electrocatalyst for hydrogen evolution reaction

Journal of Alloys and Compounds, Год журнала: 2023, Номер 968, С. 172020 - 172020

Опубликована: Сен. 9, 2023

Язык: Английский

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Interface coupling induced built-in electric fields boost electrocatalytic oxygen evolution reaction over MOF@LDHs core-shell nanocones

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2023, Номер 672, С. 131720 - 131720

Опубликована: Май 23, 2023

Язык: Английский

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Visual test paper based on Au/δ-MnO2 hollow nanosphere oxidase-like activity regulation using hexavalent chromium as a smart switch

Rare Metals, Год журнала: 2023, Номер 43(2), С. 711 - 722

Опубликована: Ноя. 18, 2023

Язык: Английский

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Constructing an n–n junction between CoFe-LDH and NiCoP as bifunctional electrocatalysts for efficient overall water splitting

Inorganic Chemistry Frontiers, Год журнала: 2023, Номер 10(16), С. 4819 - 4828

Опубликована: Янв. 1, 2023

Utilizing transition metal elements (Ni, Fe, Co) to design heterojunction catalysts is an effective approach for enhancing the efficiency of electrocatalytic water splitting.

Язык: Английский

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