4.6 Article

Recent Advances in Electrocatalytic Nitrate Reduction to Ammonia: Mechanism Insight and Catalyst Design

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Kenneth Flores et al.

Summary: As nitrate pollution worsens, the health implications of consuming concentrated nitrate are becoming better understood. Therefore, there is a need for an effective and sustainable method of removing nitrate from water. Electrocatalytic reduction of nitrate (ERN) has been identified as a promising technology, with selective production of nitrogen gas and ammonia, adaptable instrument configurations, and compatibility with renewable energy sources. Electrocatalysts with high selectivity for nitrate reduction are important for drinking water applications, while ammonia-selective catalysts are desirable for resource recovery.

ACS ES&T ENGINEERING (2022)

Article Chemistry, Multidisciplinary

Co nanoparticle-decorated pomelo-peel-derived carbon enabled high-efficiency electrocatalytic nitrate reduction to ammonia

Quanying Chen et al.

Summary: In this study, Co nanoparticle-decorated pomelo-peel-derived carbon is demonstrated as an efficient electrocatalyst for nitrate reduction to ammonia, achieving high faradaic efficiency and yield.

CHEMICAL COMMUNICATIONS (2022)

Article Chemistry, Multidisciplinary

A FeCo2O4 nanowire array enabled electrochemical nitrate conversion to ammonia

Jun Li et al.

Summary: A bimetallic FeCo2O4 spinel nanowire array grown on carbon cloth is proposed as an efficient electrocatalyst for the conversion of NO3- to NH3, with high faradaic efficiency and large NH3 yield. It also exhibits excellent stability during electrolysis.

CHEMICAL COMMUNICATIONS (2022)

Review Chemistry, Multidisciplinary

Electrocatalytic reduction of nitrate - a step towards a sustainable nitrogen cycle

Hui Xu et al.

Summary: Nitrate enrichment poses negative effects on the environment and human health. Traditional techniques for reducing nitrate levels in water bodies have limitations. Electrocatalytic nitrate reduction is a promising method due to its low cost, high efficiency, and environmental friendliness. This article provides a comprehensive account of the principles, methods, challenges, and opportunities in electrocatalytic nitrate reduction.

CHEMICAL SOCIETY REVIEWS (2022)

Review Engineering, Environmental

Recent advances in non-noble metal electrocatalysts for nitrate reduction

Xi Zhang et al.

Summary: This review highlights the latest research progress in non-noble metal materials for electrochemical nitrate reduction, discussing mechanistic insights and strategies for improving performance.

CHEMICAL ENGINEERING JOURNAL (2021)

Editorial Material Chemistry, Physical

Electrocatalytic Nitrate Reduction for Sustainable Ammonia Production

Phebe H. van Langevelde et al.

Summary: Phebe van Langevelde, Ioannis Katsounaros, and Marc Koper are renowned researchers in the field of electrocatalysis and renewable energy. Their research interests span from fundamental aspects of electrocatalysis to physical electrochemistry and theoretical electrochemistry. They have received various national and international awards for their contributions to the field.

JOULE (2021)

Article Engineering, Chemical

In-situ growth of needle-like Co3O4 on cobalt foam as a self-supported cathode for electrochemical reduction of nitrate

Jing Fu et al.

Summary: Co3O4/CF electrode material with needle-like structure exhibited excellent electrochemical performances for NO3- removal, and the internal contact between Co3O4 and CF played a key role in its performance. High NO3- removal efficiency and N2 selectivity were achieved by Co3O4/CF-600 electrode under optimized conditions. Electrocemical denitrification was mainly realized via Co2+-Co3+-Co2+ redox process.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Article Chemistry, Physical

Theoretical Insights into Superior Nitrate Reduction to Ammonia Performance of Copper Catalysts

Tao Hu et al.

Summary: This study investigated the catalytic performance of nitrate reduction to ammonia on copper crystal surfaces and found that Cu(100) and Cu(111) contribute most to NRA, with different optimal pH conditions. The research clarified the NRA pathway and highlighted the influence of pH on the catalytic processes.

ACS CATALYSIS (2021)

Article Chemistry, Physical

Co/CoP Heterojunction on Hierarchically Ordered Porous Carbon as a Highly Efficient Electrocatalyst for Hydrogen and Oxygen Evolution

Wei Li et al.

Summary: Designing a composite electrocatalyst with Co/CoP heterojunction embedded within a hierarchically ordered carbon matrix resulted in significantly enhanced catalytic activity due to optimized active site exposure and proton transfer facilitation. The Co/CoP@HOMC composites exhibited outstanding performance in hydrogen and oxygen evolution reactions, surpassing the performance of traditional Pt-based catalysts in an alkaline electrolyzer.

ADVANCED ENERGY MATERIALS (2021)

Review Chemistry, Multidisciplinary

Electrochemical ammonia synthesis: Mechanistic understanding and catalyst design

Huidong Shen et al.

Summary: NH3 production currently relies on the energy-intensive Haber-Bosch process, but electrochemical NH3 synthesis powered by renewable electricity offers a promising carbon-neutral and sustainable strategy. However, significant enhancements in energy efficiency, conversion rate, and durability are still needed, achievable only through the design of efficient electrocatalysts.
Article Chemistry, Multidisciplinary

Altering Hydrogenation Pathways in Photocatalytic Nitrogen Fixation by Tuning Local Electronic Structure of Oxygen Vacancy with Dopant

Yanan Bo et al.

Summary: This study introduces Fe dopants into TiO2 nanofibers to stabilize oxygen vacancies and tune their local electronic structure, shifting the hydrogenation of N-2 from an associative alternating pathway to an associative distal pathway. This approach provides new insights for efficiently controlling reaction pathways towards photocatalytic nitrogen fixation.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Physical

Facet-controlled palladium nanocrystalline for enhanced nitrate reduction towards ammonia

Yi Han et al.

Summary: This study demonstrates the potential of Pd nanocrystalline as a highly efficient electrocatalyst for ambient ammonia synthesis through electrochemical nitrate reduction reaction (NO3-RR). The superior activity and selectivity of Pd (1 1 1) in reducing NO3- to NH4+ is attributed to its optimized NO3- adsorption activity and smaller free energy change, providing new insights for applications in nitrate reduction reactions.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

Article Materials Science, Multidisciplinary

Two-dimensional BCN matrix inlaid with single-atom-Cu driven electrochemical nitrate reduction reaction to achieve sustainable industrial-grade production of ammonia

Xue Zhao et al.

Summary: Novel electrochemical methods have been proven effective in converting nitrates into high value-added ammonia products. The presence of Cu and B elements plays a crucial role in the catalytic activity of BCN-Cu. These findings have potential implications in wastewater treatment and high-value chemical production.

APPLIED MATERIALS TODAY (2021)

Article Multidisciplinary Sciences

Electrochemical ammonia synthesis via nitrate reduction on Fe single atom catalyst

Zhen-Yu Wu et al.

Summary: The study reports a method for selectively converting nitrate to ammonia using an Fe single atom catalyst, which effectively prevents the formation of N-N coupling products while increasing the production rate of ammonia.

NATURE COMMUNICATIONS (2021)

Article Nanoscience & Nanotechnology

Synergistic Effect of Co(III) and Co(II) in a 3D Structured Co3O4/Carbon Felt Electrode for Enhanced Electrochemical Nitrate Reduction Reaction

Wenyang Fu et al.

Summary: The study demonstrates that by controlling the calcination temperature, a relatively large amount of Co(II) on the surface of the Co3O4/CF electrode (1.3 Co(II)/Co(III) ratio) can be maintained to promote H* formation and enhance the performance of the ENRR. Therefore, building a 3D structure and optimizing the Co(II)/Co(III) ratio are crucial for designing efficient Co3O4 electrocatalysts for ENRR.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Nanoscience & Nanotechnology

Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn3O4 Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Hongjing Wang et al.

Summary: In this work, novel Cu/oxygen vacancy-rich Cu-Mn3O4 heterostructured ultrathin nanosheet arrays on Cu foam were constructed using a facile one-step hydrothermal approach. The two-dimensional ultrathin nanosheet arrays enhanced the exposure of catalytically active centers, leading to improved nitrate-to-ammonia activity. Due to the desirable compositional and structural advantages, the Cu/Cu-Mn3O4 NSAs/CF exhibited excellent performance for electrocatalytic nitrate reduction to ammonia with high ammonia selectivity and Faradic efficiency.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Nanoscience & Nanotechnology

Selective Electrocatalytic Reduction of Nitrate to Ammonia with Nickel Phosphide

Qiufang Yao et al.

Summary: This study reported a method for synthesizing ammonia by electrocatalytic reduction of nitrate using nickel phosphide grown on nickel foam as a cathode. The method showed high yield rate and superior efficiency, achieving high selectivity for ammonia generation through processes such as deoxygenation and hydrogenation.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Chemistry, Multidisciplinary

Aggregation-Induced Emissive Carbon Dots Gels for Octopus-Inspired Shape/Color Synergistically Adjustable Actuators

Shuangshuang Wu et al.

Summary: The study proposes the use of hydrophobic carbon dots to construct an aggregation-induced emission active glycol CDs polymer gel, which can be used for anisotropic bilayer soft actuators that undergo shape and color changes on water surfaces, leading to autonomous locomotion.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Sodium-Decorated Amorphous/Crystalline RuO2 with Rich Oxygen Vacancies: A Robust pH-Universal Oxygen Evolution Electrocatalyst

Lijie Zhang et al.

Summary: The study developed sodium-decorated amorphous/crystalline RuO2 with rich oxygen vacancies as a pH-universal OER electrocatalyst, showing remarkable acid resistance and high catalytic stability. The introduction of Na dopant and oxygen vacancy in RuO2 was found to lower the energy barrier for OER by weakening the adsorption strength of the OER intermediates.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Review Electrochemistry

Recent development of electrochemical nitrate reduction to ammonia: A mini review

Xingmei Lu et al.

Summary: This review focuses on the latest research progress in the field of electrochemical nitrate reduction reaction to ammonia, discussing the mechanism, catalysts, and detection methods, and exploring the future challenges and prospects.

ELECTROCHEMISTRY COMMUNICATIONS (2021)

Article Engineering, Environmental

Electrochemically Selective Ammonia Extraction from Nitrate by Coupling Electron- and Phase-Transfer Reactions at a Three-Phase Interface

Jianan Gao et al.

Summary: A new electrochemical system has been designed to reduce nitrate to ammonia and simultaneously recover ammonia compounds from wastewater. The system shows promising results in terms of nitrate removal, ammonia extraction, and ammonia separation and reduction.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

Review Materials Science, Multidisciplinary

Emerging alternative for artificial ammonia synthesis through catalytic nitrate reduction

Derek Hao et al.

Summary: Artificial catalytic synthesis of ammonia has become a hot research frontier, with potential to replace the Haber-Bosch process and reduce global CO2 emissions. Using nitrites or nitrates as nitrogen sources can significantly improve catalytic efficiency and eliminate water pollution, providing an emerging alternative for ammonia synthesis. However, more focus is needed on reducing nitrate and nitrite contamination.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2021)

Article Chemistry, Physical

Electrocatalytic Reduction of NO3- to Ultrapure Ammonia on {200} Facet Dominant Cu Nanodendrites with High Conversion Faradaic Efficiency

Shivaraj B. Patil et al.

Summary: Efficient copper nanodendrites catalysts were successfully fabricated for nitrate reduction reaction, with high Faradaic efficiency and low potential. Experimental and theoretical studies revealed that NtRR on copper metal nanostructure is facet dependent, with the dissociation of NO bonding as the rate-determining step.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2021)

Review Chemistry, Physical

Electrocatalytic nitrate/nitrite reduction to ammonia synthesis using metal nanocatalysts and bio-inspired metalloenzymes

Jing Wang et al.

Summary: Ammonia (NH3) is considered a potential carbon-free energy carrier and a crucial feedstock for various industries. Electrochemical N2 reduction to NH3 has emerged as an alternative method, utilizing nitrate/nitrite as nitrogen sources to mitigate environmental concerns. Challenges remain in achieving high NH3 yield and efficiency, highlighting the need for further research into metal nanocatalysts and cycles stability.

NANO ENERGY (2021)

Review Chemistry, Physical

Recent Advances and Perspective on Electrochemical Ammonia Synthesis under Ambient Conditions

Yang Li et al.

Summary: Ammonia is a crucial chemical for agriculture and industry, with electrochemical NH3 synthesis emerging as a frontier technology for environmentally-friendly production. Different strategies, such as classic pathways over nanomaterials and the MvK mechanism over metal nitrides, have been developed for NH3 production.

SMALL METHODS (2021)

Article Chemistry, Multidisciplinary

Wet Chemical Synthesis of Amorphous Nanomaterials with Well-Defined Morphologies

Hewei Zhao et al.

Summary: Amorphous nanomaterials with unique structural features have advantageous properties for materials applications, but face challenges in morphology control. Wet chemical synthesis has been successful in creating well-defined shapes for crystalline nanomaterials, but shape control for amorphous nanomaterials is difficult due to the unstable nature of the amorphous state and the lack of lattice directionality.

ACCOUNTS OF MATERIALS RESEARCH (2021)

Article Chemistry, Multidisciplinary

ZIF-8 engineered bismuth nanosheet arrays for boosted electrochemical reduction of nitrate

Miao Chen et al.

Summary: A novel bismuth nanosheet electrocatalyst designed for the electrochemical reduction of nitrate showed increased efficiency and selectivity in nitrate removal. By constructing a hydrophobic ZIF-8 film, the competition of hydrogen evolution reaction was effectively weakened, demonstrating its potential for industrial wastewater treatment. The metal-organic framework film engineered catalyst holds promise for designing new catalysts for nitrate removal in industrial wastewater.

NANOSCALE (2021)

Review Chemistry, Multidisciplinary

Recent advances in photocatalytic nitrogen fixation: from active sites to ammonia quantification methods

Rong Huang et al.

Summary: Photocatalytic nitrogen fixation has gained attention in recent years due to its mild and sustainable advantages. Active sites play a crucial role in catalytic reactions, and methods to increase their number and activation ability have been discussed in this review. Researchers hope to better understand the activation of nitrogen molecules and further research on nitrogen fixation photocatalysts.

RSC ADVANCES (2021)

Review Chemistry, Multidisciplinary

Nitrate electroreduction: mechanism insight, in situ characterization, performance evaluation, and challenges

Yuting Wang et al.

Summary: Excessive nitrate ions in the environment pose a significant threat to human health by disrupting the natural nitrogen cycle. Nitrate electroreduction, utilizing green electrons as reductants, shows promise due to its ability to operate under ambient conditions. Understanding the nitrate reaction mechanism is crucial for designing efficient electrocatalysts for selective nitrate reduction.

CHEMICAL SOCIETY REVIEWS (2021)

Article Chemistry, Multidisciplinary

A single-site iron catalyst with preoccupied active centers that achieves selective ammonia electrosynthesis from nitrate

Panpan Li et al.

Summary: The necessity for sustainable ammonia production using economic and environment-friendly technologies is increasing globally. This study presents an iron-based single-atom catalyst with uniform atomic dispersion on carbon, which exhibits high NH3 yield rate and faradaic efficiency. The catalyst's high selectivity for NH3 is attributed to the unique electronic structures of the individual Fe sites.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

Review Chemistry, Physical

Recent discoveries in the reaction mechanism of heterogeneous electrocatalytic nitrate reduction

Zixuan Wang et al.

Summary: This review paper discusses the fundamental mechanisms and methods of heterogeneous electrocatalytic nitrate reduction technology, exploring the nitrate reduction reaction mechanism and product selectivity, evaluating electrocatalyst performance, and factors influencing reactivity and selectivity. It emphasizes how mechanistic studies have advanced the understanding of NO3RR, and how targeted studies can lead to improved synergy between experimental and computational results, predictive mechanistic understanding, and discovery of new NO3RR electrocatalysts.

CATALYSIS SCIENCE & TECHNOLOGY (2021)

Article Chemistry, Multidisciplinary

Enzyme Mimetic Active Intermediates for Nitrate Reduction in Neutral Aqueous Media

Yamei Li et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Green & Sustainable Science & Technology

Electrocatalytic nitrate reduction using Fe0/Fe3O4 nanoparticles immobilized on nickel foam: Selectivity and energy consumption studies

Zohreh Akbari Jonoush et al.

JOURNAL OF CLEANER PRODUCTION (2020)

Article Chemistry, Multidisciplinary

Direct Electrochemical Ammonia Synthesis from Nitric Oxide

Jun Long et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Multidisciplinary

A Spectroscopic Study of Electrochemical Nitrogen and Nitrate Reduction on Rhodium Surfaces

Yao Yao et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Chemistry, Physical

The Journey toward Low Temperature, Low Pressure Catalytic Nitrogen Fixation

Run Shi et al.

ADVANCED ENERGY MATERIALS (2020)

Article Chemistry, Multidisciplinary

Efficient Ammonia Electrosynthesis from Nitrate on Strained Ruthenium Nanoclusters

Jie Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

Article Chemistry, Multidisciplinary

Biomass Juncus Derived Nitrogen-Doped Porous Carbon Materials for Supercapacitor and Oxygen Reduction Reaction

He Guanghua et al.

FRONTIERS IN CHEMISTRY (2020)

Article Chemistry, Multidisciplinary

Two-Dimensional Nanomaterials with Unconventional Phases

Yiyao Ge et al.

Article Materials Science, Multidisciplinary

Alternative route for electrochemical ammonia synthesis by reduction of nitrate on copper nanosheets

Xianbiao Fu et al.

APPLIED MATERIALS TODAY (2020)

Article Chemistry, Multidisciplinary

Electrochemically Induced Metal-Organic-Framework-Derived Amorphous V2O5for Superior Rate Aqueous Zinc-Ion Batteries

Shenzhen Deng et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Article Environmental Sciences

Metal immobilization and nitrate reduction in a contaminated soil amended with zero-valent iron (Fe0)

David Houben et al.

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY (2020)

Article Chemistry, Multidisciplinary

Boosting the electrocatalysis of nitrate to nitrogen with iron nanoparticles embedded in carbon microspheres

Wen Hong et al.

CHEMICAL COMMUNICATIONS (2020)

Review Chemistry, Multidisciplinary

Single-Atom Catalysts Based on the Metal-Oxide Interaction

Rui Lang et al.

CHEMICAL REVIEWS (2020)

Review Environmental Sciences

Reduction of nitrate by zero valent iron (ZVI)-based materials: A review

Yong Liu et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2019)

Review Chemistry, Physical

Electrocatalytic reduction of nitrate: Fundamentals to full-scale water treatment applications

Sergi Garcia-Segura et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

Review Engineering, Environmental

Electrochemical removal of nitrate in industrial wastewater

Dong Xu et al.

FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING (2018)

Article Environmental Sciences

Challenges in photocatalytic reduction of nitrate as a water treatment technology

Heather O'Neal Tugaoen et al.

SCIENCE OF THE TOTAL ENVIRONMENT (2017)

Article Chemistry, Physical

Electrocatalytic Reduction of Nitrate to Nitrous Oxide by a Copper-Modified Covalent Triazine Framework

Tatsuro Yoshioka et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2016)

Article Chemistry, Multidisciplinary

pH dependence of the electroreduction of nitrate on Rh and Pt polycrystalline electrodes

Jian Yang et al.

CHEMICAL COMMUNICATIONS (2014)

Review Chemistry, Multidisciplinary

Post-synthetic metalation of metal-organic frameworks

Jack D. Evans et al.

CHEMICAL SOCIETY REVIEWS (2014)

Article Chemistry, Inorganic & Nuclear

Mechanism of Nitric Acid Reduction and Kinetic Modelling

David Sicsic et al.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (2014)

Article Electrochemistry

On the kinetics of the nitrate reduction in concentrated nitric acid

Ronny Lange et al.

ELECTROCHEMISTRY COMMUNICATIONS (2013)

Article Chemistry, Multidisciplinary

Powering denitrification: the perspectives of electrocatalytic nitrate reduction

Matteo Duca et al.

ENERGY & ENVIRONMENTAL SCIENCE (2012)

Article Chemistry, Multidisciplinary

Single-atom catalysis of CO oxidation using Pt1/FeOx

Botao Qiao et al.

NATURE CHEMISTRY (2011)

Article Chemistry, Analytical

The influence of nitrate concentration and acidity on the electrocatalytic reduction of nitrate on platinum

MT de Groot et al.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2004)