Recent Progress and Perspectives on Transition Metal-Based Electrocatalysts for Efficient Nitrate Reduction

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(8), P. 6701 - 6722

Published: April 8, 2024

Electrochemical nitrate reduction is the process of converting into ammonia or nitrogen using electric energy. This saves energy, protects environment, and an important technology for resource recovery water purification. paper examines recent advances in electrochemical research analyzes reaction mechanism path as well influence various factors on through thermodynamic kinetic principles. Second, catalytic performances transition metal electrocatalysts form single metals, alloys, oxides, composites are analyzed detail, which lays foundation rational development new, efficient, stable electrocatalysts. Finally, future directions prospects envisioned.

Language: Английский

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Developing energy-efficient nitrate-to-ammonia flow cells with bifunctional NiFeW-oxide thin-film electrodes made by magnetron sputtering technique

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 354, P. 124137 - 124137

Published: April 27, 2024

Language: Английский

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Copper–Nickel Oxide Nanosheets with Atomic Thickness for High‐Efficiency Sulfur Ion Electrooxidation Assisted Nitrate Electroreduction to Ammonia

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(48)

Published: Aug. 16, 2024

Abstract The nitrate electroreduction reaction (NO 3 RR) offers an eco‐friendly alternative to the Haber–Bosch technology for ammonia (NH ) synthesis. However, complex process and diverse products make efficient NH synthesis challenging. Therefore, rational design preparation of highly electrocatalysts are crucial NO RR. Herein, ultrathin copper‐nickel oxide (Cu‐NiO) nanosheets (Cu‐NiO UTNSs) synthesized via cyanogel‐NaBH 4 hydrolysis‐reduction method, which applied cathodic RR ‐assisted with anodic sulfur ion (S 2− oxidation (SOR) in electrolyzer. nanosheet structure, interaction between NiO Cu, formation oxygen vacancy contribute generating rich active sites, regulating electronic improving substance adsorption. Thus, Cu‐NiO UTNSs exhibit excellent electrocatalytic performance SOR. As a bifunctional UTNSs||Cu‐NiO electrolyzer, it can reach 10 mA cm −1 at only 0.1 V − ‐to‐NH conversion cathode S ‐to‐S 8 anode. This work provides promising approach producing value‐added chemicals low electrolysis voltage strategy pollutant treatment.

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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Defective Perovskite Supported Palladium-Nickel Nanocatalyst for Effective Electrochemical Nitrate Reduction

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125433 - 125433

Published: May 1, 2025

Language: Английский

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Facile Synthesis of a Cu₃Mo₂O₉ Nanosheet Array for Electrochemical Reduction of Nitrite to Ammonia in Neutral Solution

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

Published: Jan. 8, 2025

Electrochemical nitrite (NO2–) is a promising technology for NO2– removal and sustainable method generating valuable ammonia (NH3), but this process intricate generates other byproducts. In work, we propose facile low-cost the preparation of Cu3Mo2O9 nanosheet array, which can serve as an efficient electrocatalyst reduction to NH3. The morphology be adjusted by controlling synthesis conditions. neutral solution, achieves high NH3 yield 30.46 mg h–1 cm–2 outstanding faradaic efficiency 98.6% with excellent long-term electrochemical stability reduction. Density functional theory calculations further reveal key role (202) surface its possible reaction pathways in electrocatalytic nitrite.

Language: Английский

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铜基材料电催化硝酸根还原合成氨的研究进展

Chinese Science Bulletin (Chinese Version), Journal Year: 2024, Volume and Issue: 69(25), P. 3728 - 3747

Published: March 21, 2024

硝酸盐是地下水中最有害的污染物之一,会严重影响人类健康,亟需发展有效的去除措施。传统的处理方法既耗能又不经济,且去除效果不理想,而氨肥料作为重要的资源也亟待采取既环保又经济的制备策略。电催化硝酸根还原法(NO3RR)既能去除NO3−污染,实现固氮的同时生成得到高附加值氨(NH3),因而受到了广泛的关注。NO3RR能够获得较高的NH3产率和法拉第效率(FE〖"NH" 〗_"3" ),同时避免竞争性氢析出反应(HER),并且无需克服强的N≡N三键(941 kJ mol-1)。铜(Cu)基材料价格低廉、储量丰富,并且具有优异的催化性能和较弱的HER活性等优势,其在NO3RR中展现出特殊活性,但离实际应用还有一定距离,因此,亟需通过改性策略优化Cu基材料,从而提高催化剂的性能。在这篇综述中,我们概述了Cu基材料电催化NO3RR转化的最新进展,重点讨论了各种Cu基材料在设计、合成和性能优化方面的研究,如晶面工程、合金与掺杂、异质结构、空位工程和单原子结构等不同的材料设计和调控手段,阐明了使催化剂具有更优越的反应活性、选择性、FE〖"NH" 和稳定性的设计、合成和调控思路。最后,我们还简要讨论了该领域的发展方向和挑战,并展望了NO3RR的工业应用发展。

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Electron-deficient CoO induced charge redistribution on CuCoO-NC nanohybrid for electrocatalytic reduction of nitrate to ammonia

Fuel, Journal Year: 2024, Volume and Issue: 380, P. 133159 - 133159

Published: Sept. 17, 2024

Language: Английский

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Synergistic effects of heterogeneous interfaces and induced oxygen vacancies enhance the CuO/In2O3 performance in catalytic urea synthesis

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154063 - 154063

Published: July 17, 2024

Language: Английский

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Anion-Doped Perovskite Oxygen-Permeable Membranes Fabricated via an Improved One-Step Thermal Processing Approach

Materials, Journal Year: 2024, Volume and Issue: 17(23), P. 5929 - 5929

Published: Dec. 4, 2024

Anion-doped perovskite membranes with a hollow fiber geometry have excellent oxygen separation performance. However, during the fabrication process of membranes, soaking precursor in deionized water leads to elemental dissolution, especially anion dissolution. To prevent metal and element an improved one-step thermal processing approach was proposed which saturated solutions were used as internal external coagulation baths, effectively controlling stoichiometric ratio. Compared using fluorine-containing solution increased flux membrane by 21% at 900 °C. The permeability fluorine-doped oxide reached 6 mL cm

Language: Английский

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