Magneto‐Electrochemical Ammonia Synthesis: Boosting Nitrite Reduction Activity by the Optimized Magnetic Field Induced Spin Polarized System

Advanced Energy Materials, Год журнала: 2024, Номер 14(42)

Опубликована: Сен. 25, 2024

Abstract Using low and optimized magnetic field along with electric is a novel strategy to facilitate electrochemical nitrite reduction reaction (NO 2 RR). Herein, the assisted electrocatalytic ammonia synthesis employing spin‐thrusted β‐MnPc at 95 mT explored. The calculated rate of generation 16603.4 µg h −1 mg cat , which almost twice that nonpolarized manganese phthalocyanine (MnPc) catalyst. Additionally, Faradaic efficiency (FE) –0.9 V versus RHE found be 92.9%, significantly higher compared MnPc In presence external field, catalysts provide better electron transfer channel results in lower charge resistance hence performances. Density functional theory (DFT) result further verifies induced has potential barrier (0.51 eV) for protonation NO* than (1.08 eV), confirms enhanced ammonia.

Язык: Английский

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Efficient electrochemical conversion of nitric oxide to ammonia using a porous nickel catalyst in a membrane electrode assembly electrolyzer

Chem, Год журнала: 2025, Номер unknown, С. 102460 - 102460

Опубликована: Март 1, 2025

Язык: Английский

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Accelerating Carrier Transfer in Dual p–n Heterojunctions by Mo–N Coupling to Gain an Ultrahigh-Sensitive NO₂ Sensing at Room Temperature for Asthma Diagnosis

ACS Sensors, Год журнала: 2025, Номер unknown

Опубликована: Май 12, 2025

Sensitive gas detection performed on a semiconductor in the absence of heat and irradiation activation remains substantial challenge. In this study, an activation-free NO2 sensor was developed by integrating MoOx conductive polypyrrole (ppy) onto TiO2 nanotube array (TiNT) through direct electropolymerization method from simple monomer metallic ion precursors. Thanks to abundant defects Mo-N coupling, sensing chip based as-formed double p-n heterojunctions (TiO2/ppy ppy/MoOx) exhibited excellent performances any activation, such as ultrahigh response (Rg/Ra = 11.96, 1 ppm), rapid response/recovery abilities (9/11 s), reliable repeatability, high selectivity, storage stability. Importantly, coupling shown play key role accelerating carrier transfer across ppy/MoOx interface, thus contributing outstanding kinetics. With subparts-per-billion theoretical limit (LOD for 0.12 ppb), proposed system represents best chemiresistive reported date. addition pure target gas, is capable analyzing trace complex exhaled air samples asthma diagnosis. This study provides new insight establishing interface chemistry tuning charge involved at interfaces, enabling design sensors.

Язык: Английский

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Highly electroactive mixed-valence-MoOX as an electrochemical sensing for effective detection of p-nitrophenol based on the synergistic effect of valence change and oxygen vacancy

Talanta, Год журнала: 2024, Номер 285, С. 127360 - 127360

Опубликована: Дек. 11, 2024

Язык: Английский

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