Facilitating reactant accessibility to heterometallic phosphide with superhydrophilic interfaces for efficient electrochemical production of ammonia and lactic acid

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 358, P. 124390 - 124390

Published: July 11, 2024

Language: Английский

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Dichalcogenides as Emerging Electrocatalysts for Efficient Ammonia Synthesis: A Focus on Mechanisms and Theoretical Potentials

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

Published: Jan. 28, 2025

Abstract Developing sustainable technologies for ammonia production through electrochemical reactions offers a promising alternative by leveraging renewable energy sources to produce under ambient conditions. These methods include nitrogen reduction reaction (NRR), nitric oxide (NORR), nitrite (NO 2 RR), and nitrate 3 RR). Optimizing efficiency (EE) in synthesis has become increasingly crucial as commercialization approaches. Herein, this work comprehensive study of system EE improvements the theoretical voltage calculations based on pH expansion bifunctional catalysts like transition metal dichalcogenides (TMDs), which can efficiently catalyze oxygen evolution (OER) synthesis. The review summarizes pH‐dependent redox potential Pourbaix diagrams NRR, NO RR, offering insights into potential‐pH regions where oxides are reduced NH . Incorporating design enables researchers minimize losses better improve overall performance. Finally, wraps up exploring roles TMD different mechanisms identifying areas improvement. broader impact lies its transform alignment with global efforts reduce greenhouse gas emissions.

Language: Английский

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FeIr Alloy Optimizes the Trade‐Off Between Nitrate Reduction and Active Hydrogen Generation for Efficient Electro‐Synthesis of Ammonia in Neutral Media

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

Published: Feb. 10, 2025

Abstract Electrochemically promoted nitrate reduction reaction (NITRR) holds great potential for the “green” synthesis of ammonia (NH 3 ). However, NITRR in neutral media, though close to practical scenario, is often limited by an insufficient supply active hydrogen (*H) due sluggish water cleavage. In this work, it demonstrated that a bimetallic alloy FeIr can optimize trade‐off between and *H formation media. As result, exhibits excellent catalytic performance toward with Faradaic efficiency NH up 97.3% high yield rate 11.67 mg h −1 cm −2 at low working −0.6 V (versus reversible electrode (RHE)), surpassing monometallic catalysts as well majority Fe‐based state‐of‐the‐art. It also found displays remarkable electron rearrangement hetero‐atoms their significant orbital hybridization, which benefits not only but process. Moreover, coupling FeIr‐based methanol oxidation (MOR) results sustainable productions formate combined FE nearly 200% cell‐voltage 2 V. This work thus demonstrates promising strategy designing efficient NITRR.

Language: Английский

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Enhanced Electrochemical Nitrate Reduction with a Novel (Mn,Fe)2O3/Co3S4 Electrocatalyst for Sustainable Ammonia Production

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 177576 - 177576

Published: Nov. 14, 2024

Language: Английский

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Advances in Electrocatalytic Nitrate Reduction: Insights into Mechanisms and Reaction Optimization

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Abstract Electrocatalytic nitrate reduction (NO 3 RR) offers a promising approach to address pollution by converting harmful nitrates into environment‐benign or valuable products like nitrogen gas (N 2 ) ammonia (NH ). This review explores the mechanisms, challenges, and catalysts involved in NO RR, highlighting role of catalyst selectivity, stability, external reaction conditions. The discussion also covers environmental economic benefits RR for water treatment, alongside potential future directions scaling‐up, system integration, expanding research tackling related nitrogen‐based pollutants as well real world applications.

Language: Английский

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Atomically Dispersed Mn–Ir Sites on 2D Amorphous Carbon Materials Synergistically Boost Electrochemical Overall Water Splitting

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

Published: March 3, 2025

Abstract Enhancing the activity and durability of noble‐metal‐based catalysts for overall water splitting is crucial advancing sustainable energy conversion. In this study, a novel catalyst, PBN‐Ir/Mn, reported, developed through self‐healing process polyhexabenzocoronene network (PBN) that incorporates both Mn Ir atoms. Aberration‐corrected high‐angle annular dark‐field scanning transmission electron microscopy (AC‐HAADF‐STEM) X‐ray absorption spectroscopy (XAS) characterizations confirm unique atomic‐scale Ir–Ir–Mn triangular structure on porous PBN substrate. The synergy between atoms leads to superior electrolysis performance, with ultra‐low overpotentials 11 mV hydrogen evolution reaction (HER) 220 oxygen (OER) at 10 mA cm −2 . PBN‐Ir/Mn also achieves outstanding mass activities, reaching 425.92 A mg −1 HER 152.28 OER. Moreover, demonstrates exceptional in splitting, maintaining stable performance over 100 h full‐cell setup, surpassing commercial benchmarks. Density functional theory (DFT) calculations reveal doping modifies d ‐band center Ir, reducing activation barriers significantly enhancing stability. high stability combined its scalability gram‐scale synthesis, highlight potential industrial applications multifunctional catalysis.

Language: Английский

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Dual‐reaction pathway engineering via anode‐driven methanol oxidation for efficient electrocatalytic ammonia production

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

Published: April 21, 2025

Abstract Replacing the anodic oxygen evolution reaction with selective methanol oxidation to formic acid offers a promising route enhance paired electrochemical ammonia synthesis. However, inherent kinetic and thermodynamic disparities between cathodic reduction present significant challenges in achieving optimal system performance. Herein, we propose dual‐reaction strategy employing bifunctional Au/CoOOH nanocomposite catalysts, simultaneous NH 3 production (34.15 g) synthesis (69.65 after 24 h at 2.6 V cell voltage. Density functional theory (DFT) calculations further reveal that loading Co‐based catalysts its hybridization Au nanoparticles can effectively tune electronic configuration of Co‐O sites poison their strong adsorption capacity intermediate products, lowering energy barrier alter pathway. This work provides an atomic‐level design principle for coupled systems, demonstrating better efficiency, while co‐producing high‐value chemicals scalable green

Language: Английский

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Ammonia-mediated CO2 adsorption for ammonium bicarbonate production via simultaneous CO2 capture and nitrate electroreduction in a flow cell with all sputtered thin film electrodes

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: 376, P. 125477 - 125477

Published: May 13, 2025

Language: Английский

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Tuning transition metals layered-electroplated on bimetallic MxCu1−x crystallites (M = Fe, Co, Ni, and Zn) to boost ammonia yield in electrocatalytic reduction of nitrate wastewaters

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 477, P. 135276 - 135276

Published: July 21, 2024

Language: Английский

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84.0% energy-efficient nitrate conversion by a defective (Fe,Cu,Ni)₂O₃ electrocatalyst

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(47), P. 33023 - 33038

Published: Jan. 1, 2024

Decentralized ammonia (NH 3 ) production as a way of environmental remediation for nitrate (NO − removal is current issue due to the massive impact on human well-being and environment.

Language: Английский

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