A Comprehensive Review on Catalysts for Seawater Electrolysis

Advanced Powder Materials, Journal Year: 2024, Volume and Issue: 3(5), P. 100227 - 100227

Published: Aug. 15, 2024

Language: Английский

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Boosting charge transfer via interface charge reconstruction between amorphous NiFe-LDH and crystalline NiCo2O4 for efficient alkaline water/seawater oxidation

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 4856 - 4863

Published: Feb. 8, 2024

Language: Английский

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Modulating the Local Charge Distribution of Single‐Atomic Ru Sites for an Efficient Hydrogen Evolution Reaction

Carbon Energy, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

ABSTRACT Ruthenium (Ru)‐based electrocatalysts show great promise as substitutes for platinum (Pt) the alkaline hydrogen evolution reaction (HER) because of their efficient water dissociation capabilities. Nevertheless, strong adsorption Ru–OH intermediates (Ru‐OH ad ) blocks active site, leading to unsatisfactory HER performance. In this study, we report a universal ligand‐exchange strategy synthesizing MOF‐on‐MOF‐derived FeP–CoP heterostructure‐anchored Ru single‐atom site catalyst (Ru‐FeP‐CoP/NPC). The obtained shows low overpotential (28 mV at 10 mA cm −2 and high mass activity (9.29 A mg −1 100 mV), surpassing performance commercial Pt/C by factor 46. Theoretical studies that regulating local charge distribution sites could alleviate surrounding OH − blockages, accelerating facilitating adsorption/desorption, thus enhancing activity. This work aims inspire further design highly durable with tailored electronic properties high‐purity production.

Language: Английский

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Enhanced activation of molecular oxygen for efficient chloroquine phosphate degradation with CuO@Co3O4/GF heterostructure: Promoting mechanisms of oxygen vacancy and interfacial electronic engineering

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131745 - 131745

Published: Jan. 1, 2025

Language: Английский

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Electronic Structure Engineering of Single‐Atom Tungsten on Vacancy‐enriched V₃S₄ Nanosheets for Efficient Hydrogen Evolution

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 28, 2024

Abstract Constructing single‐atom catalysts (SACs) and optimizing the electronic structure between metal atoms support interactions is deemed one of most effective strategies for boosting catalytic kinetics hydrogen evolution reaction (HER). Herein, a sulfur vacancy defect trapping strategy developed to anchor tungsten single onto ultrathin V 3 S 4 nanosheets with high loading 25.1 wt.%. The obtained W‐V catalyst exhibits low overpotential 54 mV at 10 mA cm −2 excellent long‐term stability in alkaline electrolytes. Density functional theory calculations reveal that situ anchoring W triggers delocalization redistribution electron density, which effectively accelerates water dissociation facilitates adsorption/desorption, thus enhancing HER activity. This work provides valuable insights into understanding highly active large‐scale production.

Language: Английский

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N-Doped FeP₄ Nanoparticles on Carbon Cloth as Catalysts for Electrolytic Hydrogen Evolution

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(8), P. 8756 - 8764

Published: April 9, 2024

Theoretically, the stronger electronegativity of N compared to that P suggests N-doped FeP4 could reduce adsorption energy hydrogen, potentially enhancing kinetics hydrogen evolution reaction (HER) and improving its electrochemical characteristics. Experimentally, a three-dimensional (3D) porous dodecahedron nanoparticle array catalyst developed on carbon cloth (CC) was investigated. The synthesized FeP4/CC electrocatalysts demonstrated satisfactory HER performance. These showed current density (J) 10 mA/cm–2 at an overvoltage 87 mV in 0.5 M H2SO4 solution, indicating electronically modified (N-FeP4/CC) exhibited superior activity. Additionally, overpotential for 347 simulated seawater solution (0.5 + NaCl), demonstrating exceptional catalytic activity catalyst. Density functional theory (DFT) calculations doping synergistically improve Gibbs free (ΔGH*) (−0.29 eV), which lower than undoped (0.41 eV). This supports theoretical proposition modifying electronic structure can enhance electrolysis hydrodynamics performance, aligning with experimental findings. study may provide strategy optimizing splitting.

Language: Английский

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Modulation of Reactive Hydrogen Adsorbed on Dual-Active Site NiMoO₄ Nanocubes for Reduction of Nitrate to Ammonia

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(11), P. 13338 - 13346

Published: May 16, 2024

Development of highly active and selective electrocatalysts for the reduction nitrate (NO3–) to ammonia is critical production green ammonia. Herein, we designed synthesized NiMoO4 nanocubes as an efficient electrocatalyst using deep eutectic solvents (DESs) synthesis media. By constructing Mo Ni dual-active sites, facilitates NO3– adsorption/association, acts hydrogen (*H) donating center. The amount destination *H can be regulated, which effectively enhance activity NH3 reaction (NO3–RR). optimized sample possessed excellent NO3–RR activity. An NH3–N selectivity up 96.94% a Faraday efficiency 96.13% achieved at −0.4 V in neutral solution. catalytic mechanism was also investigated by density functional theory (DFT) calculations. This site provides alternative idea application high-performance catalysts.

Language: Английский

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Non-precious Electrocatalysts for the Hydrogen Evolution Reaction

Deleted Journal, Journal Year: 2024, Volume and Issue: 1(2), P. 11 - 11

Published: May 17, 2024

The development of non-precious metal-based catalysts for the hydrogen evolution reaction (HER) is a promising research area with potential to advance water electrolysis and enable widespread use as clean energy source. While noble metals like Pt Pd exhibit excellent HER activity, their limited availability high cost present significant challenges. Non-precious transition such Fe, Co, Ni have emerged alternative catalyst materials due natural abundance. However, these often encounter obstacles related adsorption behavior. This commentary highlights various strategies employed optimize electronic structures enhance performance. outlook bright, ongoing future activities mainly focusing on improving properties, integrating into commercial systems, scalability large-scale production. high-performance crucial sustainable efficient production in from fossil fuels energy.

Language: Английский

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Engineering Boundary Electronic Supply for Boosted Overall Water Splitting

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(9), P. 3977 - 3984

Published: July 29, 2024

Electrocatalytic hydrogen evolution via water splitting occurs at the electrode surface, particularly solid–liquid interfaces. Establishing boundary electron transfer channels is crucial for accelerating molecule adsorption and mass achieving adsorption–desorption equilibrium of intermediate products. Drawing inspiration from structure a starfish, we constructed starfish-tentacle-like CoP/Co2Fe1P/CC heterostructure on carbon cloth substrate using ZIF as precursor. This design aimed to enhance capability, providing more interface active sites thereby proton transport. As anticipated, catalyst exhibited exceptional performance in both oxygen reactions. It required only 73 mV overpotential 253 current density 10 mA cm–2. Notably, it achieved low voltage 1.49 V sustained overall splitting, surpassing most state-of-the-art transition metal phosphide-based catalysts.

Language: Английский

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Boosting hydrogen adsorption via manipulating interfacial electronic structure of NiPx for enhanced alkaline seawater electrolysis

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155925 - 155925

Published: Sept. 1, 2024

Language: Английский

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