Borate Anion‐Intercalated NiV‐LDH Nanoflakes/NiCoP Nanowires Heterostructures for Enhanced Oxygen Evolution Selectivity in Seawater Splitting

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(24)

Published: Jan. 7, 2024

Abstract Resourceful and inexpensive seawater direct splitting omits the desalination process effectively increases efficiency of hydrogen energy generation. However, development is hampered by competing selectivity challenges from anodic oxygen evolution reaction (OER) chlorine issues electrode corrosion. Herein, borate anion‐intercalated NiV‐LDH nanoflakes/NiCoP nanowires heterostructures supported on Ni foam (2D/1D NiV‐BLDH/NiCoP/NF) synthesized. Theoretical calculations show that a small amount V atom doping in Ni(OH) 2 favorable for changing electronic environment around atoms via bridging Ni─O, which can construct Ni─O─V to accelerate electron transfer promote catalytic activity. The anions (B(OH) 4 − ) intercalation not only results good hydrophilicity high OH but also weakens adsorption (Cl ), restrains reaction. Thus, component optimized NiV 0.1 ‐BLDH/NiCoP/NF electrocatalyst requires 268 mV overpotential reach 100 mA cm −2 OER an alkaline environment. Particularly, NiCoP/NF||NiV cell exhibits attractive overall water performance with low voltage 1.46 1.53 at 10 freshwater seawater, respectively. design strategy this provides new avenue splitting.

Language: Английский

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Incorporating CdS and anchoring Pt single atoms into porphyrinic metal–organic frameworks for superior visible-light and sunlight-driven H2 evolution

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 464, P. 142530 - 142530

Published: March 21, 2023

Language: Английский

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Interfacial engineering of heterostructured CoP/FeP nanoflakes as bifunctional electrocatalyts toward alkaline water splitting

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 679, P. 20 - 29

Published: Oct. 18, 2024

Language: Английский

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Lattice Strain with Stabilized Oxygen Vacancies Boosts Ceria for Robust Alkaline Hydrogen Evolution Outperforming Benchmark Pt

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 12, 2024

Abstract Earth‐abundant metal oxides are usually considered as stable but catalytically inert toward hydrogen evolution reaction (HER) due to their unfavorable intermediate adsorption performance. Herein, a heavy rare earth (Y) and transition (Co) dual‐doping induced lattice strain oxygen vacancy stabilization strategy is proposed boost CeO 2 robust alkaline HER. The compression increased (O v ) concentration in synergistically improve the water dissociation on O sites sequential at activated ‐neighboring sites, leading significantly enhanced HER kinetics. Meanwhile, Y doping offers effect by its stronger Y─O bonding over Ce─O, which endows catalyst with excellent stability. Y,Co‐CeO electrocatalyst exhibits an ultra‐low overpotential (27 mV 10 mA cm −2 Tafel slope (48 dec −1 ), outperforming benchmark Pt electrocatalyst. Moreover, anion exchange membrane electrolyzer incorporated achieves stability of 500 h under 600 . This synergistic sheds new light rational development efficient oxide‐based electrocatalysts.

Language: Английский

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Efficient photocatalytic CO2 reduction to CH4 via electric field-regulated d-band center on Ga2S3/CuS S-type heterojunction interface structures

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 357, P. 124302 - 124302

Published: June 14, 2024

Language: Английский

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