Construction of nickel phosphide/iron oxyhydroxide heterostructure nanoparticles for oxygen evolution

Nano Energy, Journal Year: 2024, Volume and Issue: 123, P. 109402 - 109402

Published: Feb. 21, 2024

Language: Английский

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Surface-derived phosphate layer on NiFe-layered double hydroxide realizes stable seawater oxidation at the current density of 1 A°cm−2

Nano Research, Journal Year: 2024, Volume and Issue: 17(7), P. 5786 - 5794

Published: March 15, 2024

Language: Английский

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Intercalation-Induced Irreversible Lattice Distortion in Layered Double Hydroxides

ACS Nano, Journal Year: 2024, Volume and Issue: 18(31), P. 20459 - 20467

Published: July 22, 2024

Inducing strain in the lattice effectively enhances intrinsic activity of electrocatalysts by shifting metal's d-band center and tuning binding energy reaction intermediates. NiFe-layered double hydroxides (NiFe LDHs) are promising for oxygen evolution (OER) due to their cost-effectiveness high catalytic activity. The distorted β-NiOOH phase produced Jahn-Teller effect under oxidation polarization is known exhibit superior activity, but it eventually transforms undistorted γ-NiOOH during OER process. Such a reversible distortion limits In this study, we propose facile boron tungstate (BWO) anion intercalation method induce irreversible NiFe LDHs, leading significantly enhanced Strong interactions with BWO anions significant stress on LDH's metal-hydroxide slab, an expansion metal-oxygen bonds subsequent distortion.

Language: Английский

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Ni etching bimetallic ZIF in-situ construction of NiCo layer double hydroxides to promote oxygen evolution reaction

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162383 - 162383

Published: Jan. 1, 2025

Language: Английский

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Coal-based carbon quantum dots modified Ag3PO4/Ni-MOF composites enhanced visible light photocatalytic degradation of phenol

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 48, P. 104319 - 104319

Published: April 16, 2024

Language: Английский

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Enhanced Glycerol Electrooxidation Capability of NiO by Suppressing the Accumulation of Ni⁴⁺ Sites

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 13794 - 13803

Published: Feb. 24, 2025

Glycerol electrooxidation (GOR), as a typical nucleophilic biomass oxidation reaction, provides promising anodic alternative for coupling green hydrogen generation at the cathode. However, challenges of identifying active sites and elucidating reaction mechanisms greatly limit design high-performance catalysts. Herein, we use NiO Ni/NiO model catalysts to investigate glycerol oxidation. Electrochemical measurements operando spectroscopic studies uncovered that Ni2+/Ni3+ species are true GOR lower potentials. formed on surface were easily converted Ni4+ (NiO2) higher potentials, which not only contributed overoxidation electrolysis products but also worked main competitive oxygen evolution (OER), resulting in rapid decay Faradic efficiencies (FEs) high Interestingly, Ni/NiO, Ni3+ surface. Experimental density functional theory (DFT) investigations indicated due relatively average valence state Ni strong electronic interaction interface, reconstruction was effectively manipulated. Only → NiOOH (Ni3+) transformation observed, formation suppressed. As result, delivered superior activity, FE did drop apparently This work offers mechanistic insight into how identify maintain catalytic materials value-added nucleophile reactions.

Language: Английский

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Tuning Nanocrystalline Heterostructures for Enhanced Corrosion Resistance: A Study on Electrodeposited Ni Coatings

Coatings, Journal Year: 2025, Volume and Issue: 15(5), P. 534 - 534

Published: April 30, 2025

Tailoring the microstructural heterogeneity of metallic coatings is a promising strategy for enhancing their corrosion resistance; however, its systematic optimization remains underexplored. Here in, we present one-step, scalable electrodeposition to fabricate Ni with tunable nanocrystalline heterostructures on Cu substrates by varying current density from 1 mA/cm2 50 mA/cm2. The coating 10 mA/cm2, featuring heterogeneous nanograin structure coexisting small and large grains, exhibited optimal resistance in 3.5 wt.% NaCl solution, low self-corrosion 4.48 µA/cm2. Electrochemical impedance spectroscopy (EIS) molecular dynamics (MD) simulations revealed that heterostructure dispersed Cl− adsorption sites promoted passivation. High-resolution transmission electron microscopy (HRTEM) as increased product transitioned crystalline NiOOH an amorphous structure, which correlated reduced resistance. microstructure enhances durability, offering cost-effective alloy-free alternative offshore applications. These findings provide theoretical experimental basis designing advanced corrosion-resistant coatings.

Language: Английский

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Insight into the Facilitated surface reconstruction of NiFe layered double hydroxide by constructing heterostructures with Prussian blue analogues for enhanced oxygen evolution reaction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 137413 - 137413

Published: March 1, 2025

Language: Английский

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Tunning the single-phase triggered 3D mesostructured nitride with engineering the thermal nitridation effect for zinc-air batteries

Applied Surface Science, Journal Year: 2023, Volume and Issue: 639, P. 158226 - 158226

Published: Aug. 11, 2023

Language: Английский

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Potential-dependent OER performance on dual-Fe-Ir sites by grand canonical based constant charge method

Molecular Catalysis, Journal Year: 2023, Volume and Issue: 549, P. 113464 - 113464

Published: Aug. 21, 2023

Language: Английский

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