Enhanced Cooperative Generalized Compressive Strain and Electronic Structure Engineering in W‐Ni₃N for Efficient Hydrazine Oxidation Facilitating H₂ Production

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

Published: Jan. 7, 2025

Abstract As promising bifunctional electrocatalysts, transition metal nitrides are expected to achieve an efficient hydrazine oxidation reaction (HzOR) by fine‐tuning electronic structure via strain engineering, thereby facilitating hydrogen production. However, understanding the correlation between strain‐induced atomic microenvironments and reactivity remains challenging. Herein, a generalized compressive strained W‐Ni 3 N catalyst is developed create surface with enriched states that optimize intermediate binding activate both water 2 H 4 . Multi‐dimensional characterizations reveal nearly linear evolution (HER) activity d‐band center of under state. Theoretically, enhances electron transfer capability at surface, increasing donation into antibonding orbitals adsorbed species, which accelerates HER HzOR. Leveraging modified from W incorporation, catalysts demonstrate outstanding performance, achieving overpotentials 46 mV for 10 mA cm −2 81 HzOR 100 Furthermore, achieves overall splitting low cell voltage 0.185 V 50 , maintaining stability ≈450 h. This work provides new insights dual engineering in design advanced catalysts.

Language: Английский

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Activating FeMoO4 nanosheet arrays by partial nickel substitution for efficient electrocatalytic seawater oxidation

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

Published: Jan. 1, 2024

Nickel is integrated into self-supported FeMoO 4 nanosheet arrays by a spontaneous redox reaction, which shows significantly enhanced electrocatalytic OER performance and long-term durability under both alkaline seawater conditions.

Language: Английский

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Wide-area tip-like effect boosting electrocatalytic sulfion oxidation for energy-efficient hydrogen production in seawater electrolysis

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161611 - 161611

Published: March 1, 2025

Language: Английский

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^*H Species Regulation of Heterostructured Cu₂O/NiO Nanoflowers Boosting Tandem Nitrite Reduction for High‐Efficiency Ammonia Production

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

Published: March 18, 2025

Abstract Ambient electrocatalytic reduction of NO 2 − to NH 3 (NO RR) provides a reliable route for migrating pollutants and simultaneously generating valuable 3. However, the RR involves multistep electron transfer complex intermediates, rendering achievement high selectivity major challenge. In this contribution, heterostructured Cu O/NiO nanoflowers are explored incorporating advantages dual active sites as highly selective catalyst. Combined theoretical calculations in situ FTIR/EPR spectroscopy analysis, it is revealed synergistic effect O NiO promote energetics heterostructure electrocatalyst through tandem catalysis pathway, where activates initial absorption deoxygenation boosting * formation, while generated on then transferred substrate with abundant hydrogen conversion. Moreover, formation enhances H retention capacity, promoting consumed inhibiting inter‐ species binding. As result, equipped flow cell displays superior yield rate 128.2 mg h −1 cm −2 Faradaic efficiency 97.1% at current density −1.25 A . Further, designed system proven be adaptable other electrochemical production reactions including reduction.

Language: Английский

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NiFeB Hydroxide with Modulated Active Sites for Electrocatalytic Benzylamine Oxidation

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(13)

Published: April 1, 2025

Abstract Considering the slow kinetics of oxygen evolution reaction (OER) and need for high potential, organic electro oxidation, which is more prone to occur at low adopted replace OER process. The research method combined with hydrogen (HER) has gradually become mainstream direction synergistic production value‐added products. In this work, NiFeB hydroxide (NiFeB(OH)) nanosheet was prepared. Benefited from incorporation electron‐deficient boron (B), NiFeB(OH) catalyst exhibited excellent catalytic activity electrooxidation benzylamine (BA), benzonitrile (BN) being successfully fabricated. experiment further proves that conversion BA BN not only selectivity (100%) Faraday efficiency (94.15%), but also stability, can achieve long‐term operation. studied in work provides new ideas methods efficient benzonitrile, an intermediate.

Language: Английский

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Electrodegradation of nitrogenous pollutants in sewage: from reaction fundamentals to energy valorization applications

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review provides a comprehensive insight into the electrodegradation processes of nitrogenous pollutants in sewage, highlighting reaction mechanisms, theoretical descriptors, catalyst design, and energy valorization strategies.

Language: Английский

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