Reshape Iron Nanoparticles Using a Zinc Oxide Nanowire Array for High Efficiency and Stable Electrocatalytic Nitrogen Fixation

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

As a type of century-old catalyst, the use iron-based materials runs through Haber–Bosch process and electrochemical synthesis ammonia because its excellent capability, low cost, abundant reserves. How to continuously improve catalytic activity stability for nitrogen fixation has always been goal pursued by scientific researchers. Herein, we develop free-standing i.e., iron nanoparticles with zinc oxide nanowire array support (Fe/ZnO NA), which exhibits high yield ∼54.81 μg h–1 mgcat.–1 Faradaic efficiency (FE) ∼9.56% in 0.5 M potassium hydroxide solution, along good reusability durability. Its electrocatalytic ability is superior that commercial Fe most reported Fe-based catalysts, thus showing great competitiveness. This ZnO NA not only supplies stable homogeneous dispersion but also provides very beneficial synergy their activity. The work renews traditional catalysts significance promoting industrialization synthesis.

Language: Английский

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Nanoflower‐Like CuPd/CuO Heterostructure for an Energy‐Output Electrocatalytic System Coupling Ammonia Electrosynthesis and Zinc‐Nitrate Battery

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Abstract Electrochemical nitrate reduction reaction (NO 3 RR) can effectively alleviate pollution and simultaneously realize ammonia electrosynthesis at room temperature. However, it remains a significant challenge for NO RR to achieve high Faradic efficiency in full concentration range. Herein, nanoflower‐like copper‐palladium alloy/CuO heterostructure (CuPd/CuO@NF) is successfully fabricated by the hydrothermal synthesis of CuO nanoflowers subsequent formation CuPd alloy. The as‐obtained CuPd/CuO@NF exhibits remarkable electrochemical performance − ‐N range from 20 1400 ppm, especially with conversion rate 97.8% NH selectivity 99.3% 94.2% yield 1.37 mmol h −1 cm −2 ppm. In‐situ Fourier transform infrared spectroscopy Raman spectra reveal that first catalyzes 2 , which rapidly reduced forming *NH, *NH OH intermediates. Density functional theory calculations suggest NHO route thermodynamically favorable. When applied zinc‐nitrate battery, demonstrates maximum power density 53.7 mW 99.9% 94.4%. This work offers valuable insights into design novel electrocatalysts batteries.

Language: Английский

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Facile and direct approach to synthesize nitride based catalysts for ammonia synthesis

Green Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

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Cascade Design and Facile Fabrication of Cu/Cu₂O/CuAl‐Layered Double Hydroxides as Efficient Nitrate Reduction Electrocatalysts

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 15, 2024

Nitrate (NO

Language: Английский

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Concave Fe2O3 Nanocubes with High-index Facets for Ammonia Production from Electrocatalytic Nitrate Reduction

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 18, 2024

An iron oxide catalyst with high-index (1238) and (1344) facets achieves a high faradaic efficiency of 96.54% production rate 1.13 mmol h −1 cm −2 towards electrocatalytic nitrate reduction to ammonia at 250 mA .

Language: Английский

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