Construction of Electron-Deficient Co on the Nanotube Arrays Enhances Absorption and Direct Electron Transfer To Accelerate Electrochemical Nitrate Reduction DOI
Zhifeng Gao,

Xueying Duan,

Xu Yin

et al.

Published: Jan. 1, 2024

Language: Английский

Boosting Nitrate Electroreduction to Ammonia on Alloying of Cu With Au by Accelerated Proton Relay DOI Creative Commons

Shuchun Sun,

Deliang Zhang,

Dongrun Li

et al.

Aggregate, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

ABSTRACT Bimetallic nanoparticles (NPs) are recognized as effective catalysts for the nitrate reduction reaction (NO 3 – RR) to produce ammonia (NH ) due their multiple active sites and electron redistribution enabled by strong metal–metal interactions. An in‐depth analysis of mechanism is essential advancing efficient electrocatalysts. In this study, carbon‐supported Au Cu alloy (Au Cu/CC) were synthesized applied direct NO − NH . The generation rate achieved with Cu/CC was 1719.3 µg h −1 cm −2 , Faraday efficiency (FE) measured at 95.1% under an ultra‐low potential −0.5 V versus RHE. high activity attributed synergistic interactions between in relay catalysis, where exhibits selective *NO, while demonstrates excellent performance subsequent *NO Additionally, d–d orbital hybridization adjusts d–band center NPs, effectively modulating adsorption energies *N facilitate This electrocatalytic approach offers a novel strategy designing multifunctional RR catalysts.

Language: Английский

Citations

0
Dopant-Induced Hexagonal to Orthorhombic Phase Transition in Fe2–xMoxP Nanorods and Its Influence on the Electrocatalytic Hydrogen Evolution Reaction DOI Creative Commons

Jordon Baker,

Danyang Wang, Md. Kawsar Alam

et al.

Chemistry of Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Electrochemical water splitting represents a sustainable method for producing molecular hydrogen, promising clean energy alternative to fossil fuels. Iron phosphides have emerged as earth-abundant catalysts the hydrogen evolution reaction (HER), where performance can be enhanced by admixing synergetic metals produce bimetallic catalysts. Herein, we report theoretical and experimental study that reveals influence of dopant-induced hexagonal orthorhombic phase transition on catalytic activity stability Fe2P nanorods (NRs) HER. Among eight metal dopants computationally studied, Mo has been identified most dopant owing its optimum binding free (ΔG H) (210) surface. Accordingly, Fe2-x x P NRs (x = 0-14%) with average lengths widths ranging from 50.9 ± 22.1 92.4 43.8 nm 3.8 1.0 6.3 1.8 nm, respectively, were colloidally synthesized investigate structure- composition-dependent HER activity. Upon incorporation Mo, underlying transformed into when ≥ 0.11 (5.41%). The admixture caused variations in surface chemistry, leading significant decrease Feδ+ Pδ- charges. was observed both phase- mixed-phase 0.03, 0.06, 0.09) exhibiting superior overpotentials (η-10) 298, 267, 222 mV, respectively at current density (j) -10 mA/cm2 compared (η-10 378 mV) 331-459 mV 0.12-0.28) highest achieved Fe1.91Mo0.09P composition 4.58%, consistent ΔG H calculations. Although all compositions displayed Volmer-Heyrovsky mechanism, improved kinetics, lowest Tafel slope (167.08 mV/dec) NRs. improves charge transfer resistance preserves alkali environments negligible increase η-10 after 10 h This advances understanding crystal structure transitions paves way efficient stable material design.

Language: Английский

Citations

0
Construction of electron-deficient Co on the nanoarrays enhances absorption and direct electron transfer to accelerate electrochemical nitrate reduction DOI
Zhifeng Gao,

Xueying Duan,

Xu Yin

et al.

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136443 - 136443

Published: Nov. 7, 2024

Language: Английский

Citations

2
Ammonia and formate cosynthesis via nitrate electroreduction combined with methanol electrooxidation over nitrogen-doped carbon-encapsulated nickel iron phosphide DOI
Zongyi Wang,

Jiuli Chang,

Zhiyong Gao

et al.

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Nitrate–methanol co-electrolysis by the pairwise cathodic NO 3 RR and anodic MOR is a viable way to coproduce ammonia (NH ) formate via gentle, sustainable energy-saving “E-refining” “E-reforming” means.

Language: Английский

Citations

1
Construction of Electron-Deficient Co on the Nanotube Arrays Enhances Absorption and Direct Electron Transfer To Accelerate Electrochemical Nitrate Reduction DOI
Zhifeng Gao,

Xueying Duan,

Xu Yin

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0