Elaborately tuning the electronic structure of single-atom nickel sites using nickel nanoparticles to markedly enhance the electrochemical reduction of nitrate into ammonia

Xi, Zichao; Wang, Hua; Liu, Baocang; Xu, Xuan; Peng, Jing; Gao, Rui; Zhang, Jun

doi:10.1016/j.jechem.2023.03.037

Cited by 33 publications

(4 citation statements)

References 53 publications

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“…Thus, SACs can overcome the disadvantage of the high price of precious metals, which prevents large-scale applications. In addition, transition metal SACs (TM-SACs) have become ideal electrocatalytic materials, 138 such as Cu-SAC, 36,139,140 Fe-SAC, 41,141 Co-SAC, 46 and Ni-SAC, 142 that are gradually being considered for applications in electrochemical nitrate reduction. However, no systematic theory has been developed for the study of the actual active sites and reaction mechanisms of SACs, and related studies are only beginning to investigate this topic.…”

Section: Alloys Of Tmesmentioning

confidence: 99%

Section: Rational Selection and Design Of Electrocatalyst Materialsmentioning

confidence: 99%

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

Zhou,

Gao,

2024

Energy Fuels

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

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Section: Alloys Of Tmesmentioning

confidence: 99%

Section: Rational Selection and Design Of Electrocatalyst Materialsmentioning

confidence: 99%

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

Zhou,

Gao,

2024

Energy Fuels

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“…Microbial denitrification not only has low reaction efficiency but is also constrained by reaction conditions. Given the low bond energy of nitrate (204 kJ/mol), it provides favorable kinetics for the electrocatalytic preparation of ammonia. − In addition, high concentrations of nitrate in industrial, agricultural, and domestic wastewater also provide a suitable reaction basis for the electroreduction of nitrate. , Therefore, the electroreduction of nitrate (ERN) to produce ammonia is considered the most valuable and promising nitrogen fixation technology. − ERN under alkaline conditions to generate ammonia involves the transfer of eight electrons, and the detailed reaction process is as follows: H 2 normalO = H ∗ + O ∗ normalH N ∗ normalO 3 − + H ∗ + e − = N ∗ O 2 + OH − N ∗ O 2 + H ∗ + 2 e − = N ∗ normalO + OH − N ∗ normalO + H ∗ + 2 e…”

Section: Introductionmentioning

confidence: 99%

“…20−22 In addition, high concentrations of nitrate in industrial, agricultural, and domestic wastewater also provide a suitable reaction basis for the electroreduction of nitrate. 23,24 Therefore, the electroreduction of nitrate (ERN) to produce ammonia is considered the most valuable and promising nitrogen fixation technology. 25−30 ERN under alkaline conditions to generate ammonia involves the transfer of eight electrons, and the detailed reaction process is as follows:…”

Section: ■ Introductionmentioning

confidence: 99%

Efficient Electrochemical Nitrate Removal by Ordered Ultrasmall Intermetallic AuCu₃ via Enhancing Nitrate Adsorption

Zhou,

Dai,

Song

et al. 2024

ACS Appl. Mater. Interfaces

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Developing a high-performance electrocatalyst for synthesizing ammonia from nitrate represents a promising solution for addressing wastewater pollution and achieving sustainable ammonia production. However, it remains a formidable challenge. Herein, an intermetallic AuCu 3 electrocatalyst with highdensity active sites is designed and prepared for an efficient nitrate electroreduction to generate ammonia. Remarkably, the Faraday efficiency and yield rate of ammonia at −0.9 V are 97.6% and 75.9 mg h −1 cm −2 , respectively. More importantly, after 10 cycles of testing, the removal rate of nitrate can still reach 95.2%. Electrochemical in situ Fourier transform infrared analysis indicates that AuCu 3 IM can promote the adsorption of nitrate and enhance ammonia production from nitrate. *NH 3 , *NO, and *NO 2 have been proven to be active intermediates. Theoretical and experimental studies show that the Au site can provide a large amount of *H for nitrate reduction, and the Cu site is conducive to the reduction of nitrate to produce nitrogen-containing products. Meanwhile, AuCu 3 intermetallic compounds (AuCu 3 IM) can inhibit the dimerization of *H. The power density and ammonia yield of the assembled Zn-nitrate battery reached 2.17 mW cm −2 and 71.2 mg h −1 cm −2 , respectively.

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Current State and Future Prospects of Environmentally Catalytic Zn‐NO_x Batteries

Yu,

Wang,

Tan

et al. 2024

Advanced Energy Materials

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Zn‐based catalytic batteries, recognized as eco‐friendly alternatives, are attracting significant research interest for their applications in energy storage, conversion, pollutant degradation, and ammonia synthesis. This review compiles the latest developments in Zn‐nitrogen oxides (NOx) batteries, covering various types including Zn‐nitrate, Zn‐nitric oxide, and Zn‐nitrite batteries. This study explores the electrode reactions and structural evolutions of these batteries, emphasizing the different challenges posed by cathodic reactions. Advanced design strategies for cathode materials, such as inhibiting hydrogen production, utilizing tandem sites, and enhancing reactant enrichment, are presented and evaluated. These strategies have markedly improved NOx reduction performance and have driven significant progress in Zn‐NOx battery. The future directions for research are outlined, highlighting the need for more efficient NOx reduction catalysts, optimization of Zn anodes, development of alternative metal anodes, battery structure improvements, and exploration of charging reactions. Addressing these challenges is crucial for advancing the development of eco‐friendly and high‐energy‐density Zn‐NOx batteries.

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Elaborately tuning the electronic structure of single-atom nickel sites using nickel nanoparticles to markedly enhance the electrochemical reduction of nitrate into ammonia

Cited by 33 publications

References 53 publications

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

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

Efficient Electrochemical Nitrate Removal by Ordered Ultrasmall Intermetallic AuCu₃ via Enhancing Nitrate Adsorption

Current State and Future Prospects of Environmentally Catalytic Zn‐NO_x Batteries

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Elaborately tuning the electronic structure of single-atom nickel sites using nickel nanoparticles to markedly enhance the electrochemical reduction of nitrate into ammonia

Cited by 33 publications

References 53 publications

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

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

Efficient Electrochemical Nitrate Removal by Ordered Ultrasmall Intermetallic AuCu3 via Enhancing Nitrate Adsorption

Current State and Future Prospects of Environmentally Catalytic Zn‐NOx Batteries

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Product

Resources

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Efficient Electrochemical Nitrate Removal by Ordered Ultrasmall Intermetallic AuCu₃ via Enhancing Nitrate Adsorption

Current State and Future Prospects of Environmentally Catalytic Zn‐NO_x Batteries