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Article
Chemistry, Physical
Hui Liu et al.
Summary: In this study, a CuO NWAs@Co3O4 core-shell heterostructure catalyst was proposed for efficient electrochemical nitrate reduction to ammonia (NRA). Compared with pure CuO NWAs and Co3O4 flocs, CuO NWAs@Co3O4 exhibited significantly enhanced NRA performance.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Qi Hu et al.
Summary: This study presents an in situ electrochemical strategy for the synthesis of hollow carbon-coated Cu nanoparticles with abundant grain boundaries, enabling highly efficient NO3-RR in both alkaline and neutral media. The proposed method achieves a high NH3 production rate and NH3 Faradaic efficiency in alkaline media, offering exciting opportunities for practical electrosynthesis NH3 under ambient conditions.
Article
Nanoscience & Nanotechnology
Chaochen Wang et al.
Summary: In this study, it was found that in situ electrochemical reduction modulates the oxidation state of copper, facilitating the formation of Cu2O on the copper surface and significantly improving the yield of ammonia in nitrate reduction. Techniques such as ion beam sputtering and operando Raman spectroscopy were used to reveal the multilayer structure of the material and the reduction process of surface oxide species. This research is of great significance for gaining a deeper understanding of the reaction mechanism of NO3RR.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Zhiwei Fang et al.
Summary: Ammonia is an essential ingredient in agriculture and a promising source of clean energy, with the electrochemical nitrate reduction reaction (NO3RR) showing potential for efficient and environmentally friendly ammonia production. The development of high-rate NO3RR can be achieved using two-dimensional iron-based cyano-coordination polymer nanosheets, which exhibit high catalytic activity with a high NH3 yield rate and Faradaic efficiency. The research also highlights the importance of superhydrophilic surface and enhanced electrochemical surface area for high-rate electrocatalysis.
Article
Engineering, Environmental
Xiaoyu Zhang et al.
Summary: Ni3N/N-C nanohybrids synthesized in this work exhibit efficient electroreduction of nitrate, high selectivity and yield rate for ammonium production, as well as excellent long-term stability, making them promising candidates for practical applications in nitrate treatment and ammonium production.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Pingping Huang et al.
Summary: A three-dimensional flower-like zinc cobaltite electrocatalyst was developed for the conversion of nitrate to ammonia at room temperature. The electrocatalyst exhibited a high ammonia yield rate and good stability, providing a promising route to reduce nitrate concentration.
Article
Chemistry, Multidisciplinary
Zhida Chen et al.
Summary: The morphological distribution of Ru on nitrogen-doped graphene can be regulated by modulating the combination mode. In alkaline solutions, the combination of Ru single-atom sites and Ru nanoparticles can synergistically promote excellent hydrogen evolution reaction performance.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Qian Liu et al.
Summary: NiCo2O4 nanowire array on carbon cloth (NiCo2O4/CC) is proposed as a highly active electrocatalyst for ambient nitrate (NO3-) reduction to ammonia (NH3). It achieves a high Faradic efficiency of 99.0% and a large NH3 yield up to 973.2 mu mol h(-1) cm(-2). The superior catalytic activity comes from its half-metal feature and optimized adsorption energy due to the existence of Ni in the crystal structure.
Article
Chemistry, Physical
Zi-Xin Ge et al.
Summary: Polyallylamine-functionalized RhCu bimetallic nanocubes show remarkable performance as an electrocatalyst for the reduction of nitrate to ammonia. The study suggests a potential avenue for constructing advanced catalysts based on organic molecule-mediated interfacial engineering.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Rong Zhang et al.
Summary: Using iron-doped nickel phosphide as the catalyst electrode, a Zn-nitrate battery is able to achieve energy supply, ammonia production, and pollutant removal simultaneously.
ADVANCED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Min Liu et al.
Summary: A Pd-PdO-modified Co(3)O(4) nanowire array with excellent catalytic performance for the selective reduction of nitrate to ammonia has been successfully fabricated. This research provides an effective strategy for the preparation of nanowire arrays with controllable compositions for selective nitrate electroreduction to ammonia.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yuting Wang et al.
Summary: Carbon-supported RuO2 nanosheets with adjustable crystallinity show high efficiency and selectivity in nitrate reduction to ammonia, outperforming crystalline counterparts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Zheng Wei et al.
Summary: This study investigates the catalytic mechanism of electrocatalytic nitrate reduction to ammonia using TiO2 nano materials with hetero-phase junctions and oxygen defects. The oxygen defects are found to act as the adsorption sites of NO3-. Enhanced performance in NH3 synthesis is attributed to the strong interface interactions induced by Ti3+-Odef pairs and hetero-phase junctions. The reaction mechanism for NH3 synthesis from NO3- is revealed through online differential electrochemical mass spectrometry (DEMS) and density functional theory (DFT) calculations.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
You Xu et al.
Summary: This study designs a low-content Pd-Cu2O CEO catalyst for electrochemical NO3--to-NH3 transformation, which exhibits unique structural features and active sites, enabling efficient and selective ammonia synthesis.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Zhiheng Gong et al.
Summary: Ar plasma treatment is an effective method to improve the NO3-RR activity of Cu2O by promoting the formation of oxygen vacancies and hydroxyl groups on its surface, leading to enhanced ammonia selectivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Shenghua Ye et al.
Summary: In this study, phosphate FeCo(H3O)(PO4)(2) nanosheet arrays were synthesized using an electrochemical strategy. It was found that FeCo(H3O)(PO4)(2) nanosheet arrays could undergo significant self-reconstruction under the conditions of oxygen evolution reaction (OER), resulting in the formation of Fe0.5Co0.5OOH nanosheet arrays with low crystallinity. The high Fe content in Fe0.5Co0.5OOH nanosheet arrays promoted the formation of active Fe3+-O-Fe3+ motifs and enhanced the reaction order on the hydroxyl ion, leading to outstanding OER catalytic performances.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Guangming Jiang et al.
Summary: Electrocatalytic nitrate reduction is an important method for nutrient recycling and complete nitrogen elimination. The in-situ electroreduction of CuAl-mixed oxide can stabilize Cu delta+ and achieve good performance in electrocatalytic nitrate reduction. Furthermore, coupling ENRR with a breakpoint chlorination reaction enables complete conversion of nitrate.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Ling Fang et al.
Summary: Electrochemical reduction of nitrate is a promising approach for producing value-added ammonia. This study reveals that the pristine Cu oxides can be transformed into Cu with a high density of stacking faults during the reduction process. The Cu grown on Cu foam exhibits excellent removal of nitrate-N, selectivity of ammonia-N, and Faradaic efficiency of ammonia.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Mengqiu Xu et al.
Summary: The industrial Haber-Bosch process for ammonia synthesis is important but energy-intensive and polluting, leading to research in eco-friendly NH3 synthesis. A study on electrochemical nitrate reduction reaction (NTRR) using single-atom Cu catalyst found excellent performance, offering guidance for the rational design of highly active, selective, and durable electrocatalysts for NTRR.
Article
Chemistry, Physical
Peipei Wei et al.
Summary: In this study, Fe-doped Co3O4 nanoarray is reported to efficiently catalyze NO3RR for NH3 production in neutral conditions, achieving high yield and Faradaic efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Matthew J. Liu et al.
Summary: The study demonstrates the surface reconstruction and formation of titanium hydride on titanium electrodes during the electrochemical nitrate reduction reaction. The obtained quantitative relationship allows the decoupling of hydride formation from the reaction performance, and enables the design and operation of catalysts for the NO3RR. The NO3RR activity and selectivity of TiH2/Ti electrodes at different potentials were analyzed using density functional theory calculations.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Yongwen Ren et al.
Summary: This study systematically investigates the activation and recombination processes of N-2 and O-2 molecules in plasma, and decouples the mechanism of NOx- reduction to NH3, providing a basis for the practical development of ammonia synthesis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Feng-Yang Chen et al.
Summary: The research team has efficiently converted nitrate, a common pollutant in wastewater and groundwater, into valuable ammonia products using a Ru-dispersed Cu nanowire catalyst through electrochemical methods. This sustainable approach not only treats wastewater but also generates ammonia, but current low catalytic activities pose challenges. However, the team has developed a high-performance catalyst that achieves over 99% nitrate conversion into ammonia and successfully obtains high purity NH4Cl solid and NH3 liquid products.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Fengling Zhou et al.
Summary: The fuel cell is a device that generates electricity from chemical fuels, but its slow reaction rate has been a key challenge. This study demonstrates a novel oxygen-free design of a zinc-nitrate fuel cell that converts nitrate waste into ammonia and generates electricity simultaneously. The cell maintains high chemical conversion efficiency and power density even after long-term testing.
Article
Multidisciplinary Sciences
Wenhui He et al.
Summary: In this study, a design concept of tandem catalysts was proposed to achieve cascade conversion of waste nitrate to valuable ammonia using different transition metal phases. By transforming Cu-Co binary sulfides into Cu/CuOx and Co/CoO phases, efficient NH3 synthesis was achieved. The tandem catalyst system exhibited high Faradaic efficiency and NH3 yield rate in the presence of waste nitrate, and surpassed previous studies in terms of energy efficiency.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Qiang Gao et al.
Summary: Machine learning is a powerful tool for screening electrocatalytic materials. In this study, the authors integrated machine-learned physical insights with the synthesis of structurally ordered intermetallic nanocrystals to achieve efficient nitrate reduction to ammonia. They discovered that breaking adsorption-energy scaling relations through site-specific Pauli repulsion interactions allows for non-scaling behavior in ordered intermetallics. The authors also synthesized CuPd nanocubes with high performance for nitrate reduction to ammonia.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yian Wang et al.
Summary: In this study, theoretical screening was performed on transition metal-N-4-doped graphene (TM-N-4/C) as active and selective electrocatalysts for electrochemical nitrate reduction reaction (NO3RR). The study explored detailed reaction mechanisms and activity origins, and found that Cu- and Pt-N-4/C showed high activity for NO3RR via NH3 and N-2 formation pathways, respectively, attributed to optimal NO and N adsorptions. Moreover, Re- and Pt-N-4/C exhibited high selectivity towards NH3 and N-2 formations, respectively. This work provides theoretical insights for the rational design of TM-N-4/C catalysts for NO3RR and offers opportunities for efficient nitrate removal and ammonia synthesis strategies.
Article
Chemistry, Physical
Yaling Zhao et al.
Summary: In this study, an open-structured catalyst with polycrystalline copper nanoparticles loaded on carbon fiber papers has been prepared by a simple method, achieving high efficiency and selectivity in nitrate reduction to ammonia. The optimal sample exhibited excellent reduction performance in a neutral solution.
Article
Chemistry, Physical
Yuanzheng Zhang et al.
Summary: This study designed and prepared Au1Cu (111) single-atom alloys with superior performance for electrocatalytic reduction of nitrate to ammonia in wastewater. The Au1Cu catalyst showed high NH3 production rate and Faradaic efficiency, and exhibited excellent durability without significant activity decay. Furthermore, the produced ammonia can be easily recovered through membrane distillation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Ji Yang et al.
Summary: This study reveals the restructuring of the as-synthesized Cu-N4 single-atom site to nanoparticles during the electrochemical reduction of nitrate to ammonia. The restructuring and the enhancement of the ammonia production rate occur concurrently with the applied potential switching. The Cu nanoparticles are found to be the genuine active sites for nitrate reduction to ammonia.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Jing Wang et al.
Summary: The bismuth ferrite (BiFeO3) flakes, with a distorted perovskite-type structure, are demonstrated to be excellent catalysts for electrochemical NH3 synthesis via nitrate reduction, with high Faradaic efficiencies and NH3 yield. During the reaction, the crystalline BiFeO3 rapidly converts into a stable amorphous phase.
Article
Chemistry, Physical
Yan-Tong Xu et al.
Summary: A noncollapse metal-organic framework (MOF) supported single-atom Cu precatalyst has been developed for electrocatalytic nitrate-to-ammonia reduction reaction (NARR). The unique MOF structure prevents framework collapse and allows the formation of uniform ultrasmall nanoclusters, resulting in high catalytic activity and selectivity. Density function theory (DFT) calculation confirms the size effect and the host-guest interaction in facilitating the reaction.
Article
Chemistry, Physical
Wenxi Qiu et al.
Summary: This work demonstrates the incorporation of CuOx active species into a TiO2 nanotube reactor for selective electrocatalytic nitrate reduction reactions. The diffusion of the intermediate NO2- is hindered due to the nanoconfined space, leading to a high faradaic efficiency and conversion rate of nitrate to ammonia. Theoretical insights further support the understanding of the surface and interface interactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Nadaraj Sathishkumar et al.
Summary: This study systematically investigates the electrocatalytic activity and NH3 selectivity of a single-atom catalyst supported on graphitic carbon nitride for nitrate reduction reaction. The results reveal promising catalysts for achieving nitrate to ammonia conversion with stability, excellent activity, high selectivity, and low limiting potential.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Shuo Wang et al.
Summary: This study verified the feasibility of various single-atom catalysts for NO3RR through high-throughput density functional theory calculations, with Os SAC identified as the most promising candidate and the origin of its high activity explained.
Article
Chemistry, Physical
Piotr M. Krzywda et al.
Summary: Inefficient fertilizer use in agriculture causes nitrate runoff, which can be mitigated by electrochemical conversion to ammonia, especially with the introduction of inert gas flow to increase mass transport and partial current density.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Jinlu Wang et al.
Summary: This study successfully achieved ammonia production under ambient conditions through the synthesis of CuCo2O4 spinel with high electrocatalytic activity. The electrocatalyst exhibits high NH3 yield rate and high faradaic efficiency at lower voltages.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Tao Hu et al.
Summary: This study demonstrates the feasibility of using two-dimensional transition metal carbides, M3C2 MXenes, as an electrocatalyst for the reduction of nitrate to ammonia. Through density functional theory calculations, it is found that the reaction prefers to occur on the basal plane. By analyzing the thermodynamics and kinetics, the most probable reaction pathway is determined to be consecutive deoxygenation and hydrogenation. Functionalization of MXenes enhances the catalytic activity, with partially O-vacant Ti3C2O2 identified as a promising NRA electrocatalyst. These findings provide new strategies for the rational design of MXene-based NRA electrocatalysts with universal significance.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Review
Chemistry, Multidisciplinary
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)
Article
Engineering, Environmental
Ling Fang et al.
Summary: The study found that during nitrate reduction, Cu oxide can be transformed into oxide-derived Cu, which exhibits efficient NO3RR performance. The generation of oxide-derived Cu has a positive effect on nitrate adsorption and the activity of metallic Cu.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Huan Niu et al.
Summary: Selective nitrate-to-ammonia electrochemical conversion is an efficient pathway to solve nitrate pollution, and current research on single-atom catalysts demonstrates high efficiency and selectivity in NO3RR, paving the way for further development in this area.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Yangge Guo et al.
Summary: Using density functional theory combined with implicit continuum solvation model, we predicted the reaction energetics for nitrate reduction on rhodium surfaces in alkaline media. The results showed that Rh(110) and Rh(100) exhibited different activity and selectivity for nitrate reduction at different potential ranges.
JOURNAL OF CATALYSIS
(2021)
Editorial Material
Chemistry, Physical
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.
Article
Chemistry, Multidisciplinary
Changhong Wang et al.
Summary: In this study, an efficient catalyst for electrochemical nitrate reduction to ammonia (NRA) in neutral media was designed by doping Fe into Cu nanocrystals. The CuFe catalyst showed improved catalytic performance compared to pure Cu material, with higher catalytic current density, faradaic efficiency, and selectivity for NRA.
Article
Chemistry, Physical
Zixuan Wang et al.
Summary: This study demonstrates that the performance of electrocatalysts for nitrate reduction can be tuned by changing the adsorption strength of reacting species through alloying. Pt78Ru22/C alloy shows six times higher activity than Pt/C at 0.1 V vs. RHE, with predicted maximum activity at 25 at% Ru.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Xiaohui Deng et al.
Summary: The study demonstrates the high NH3 producing capability and close-to-unity Faradaic efficiency of metallic cobalt nanoarrays in electrochemical nitrate reduction. Density function theory calculation reveals the optimized adsorption energy of NITRR intermediates on Co surface. Additionally, the study proposes a water dissociation-hydrogenation pathway that facilitates proton-supplying in the process.
Article
Chemistry, Physical
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.
Article
Chemistry, Physical
Jing Wang et al.
Summary: The electrochemical nitrate reduction reaction (NITRR) is an attractive method for ammonia synthesis. By designing ultrathin CoOx nanosheets with abundant surface oxygen as catalysts, the efficiency of NITRR can be increased, hydrogen evolution reaction can be suppressed, and the yield of ammonia can be enhanced.
Article
Chemistry, Multidisciplinary
Laiquan Li et al.
Summary: The process of converting N-2 to NH3 can be decoupled into a two-step process for efficient and selective ammonia production, utilizing air and water as low-cost raw materials. Surface boron-rich nickel boride electrocatalyst plays a key role in enhancing activity, selectivity, and stability, resulting in significant ammonia production with nearly 100% Faradaic efficiency.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Editorial Material
Engineering, Multidisciplinary
Lilong Jiang et al.
Article
Materials Science, Multidisciplinary
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
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
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
Yi Jia et al.
Summary: This study successfully synthesized porous and amorphous cobalt phosphide nanoshuttles with outstanding electroactivity for nitrate electroreduction reaction. The CoP PANSs exhibited high Faraday efficiency and yield rate for ammonia production, surpassing most reported values for various electrocatalysts. This suggests promising applications for cobalt phosphide nanomaterials in nitrate remediation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Wu-Ji Sun et al.
Summary: The built-in electric field in the electrocatalyst significantly accumulates NO3- ions and lowers the energy of reaction intermediates, leading to efficient nitrate removal and NH3 production. The CuCl (111) and rutile TiO2 (110) electrocatalyst shows the best performance among reported studies at 100 mg L-1 of nitrate concentration.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Yian Wang et al.
Summary: This study investigates the effects of Cu crystal facets and pH on the electrocatalytic nitrate reduction reaction using a hybrid model. Results show that in acidic media, both Cu(100) and Cu(111) facets produce NH3 through the formation of specific intermediates. In alkaline media, Cu(100) prefers NH2OH formation, while Cu(111) favors NH3 formation. Overall, the (100) facet exhibits higher activity towards nitrate reduction, especially at higher pH levels.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Jeonghoon Lim et al.
Summary: The surface structure of Pd has a significant impact on the activity of nitrate and nitrite reduction, with cuboctahedral catalysts demonstrating the highest ammonia production in an alkaline electrolyte. This suggests that catalytic structural design plays a crucial role in enabling the selective reduction of nitrate to ammonia.
Review
Chemistry, Physical
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.
Article
Chemistry, Multidisciplinary
Qing-Ling Hong et al.
Summary: High-quality CoP nanorings (CoP NRs) are easily achieved by phosphorating treatment of CoOOH nanorings, showing high activity towards hydrogen evolution reaction and nitrate electrocatalytic reduction reaction due to coordinately unsaturated active sites, high surface area, and mass transfer pathways. The CoP NRs can achieve 97.1% faradaic efficiency towards NO3--to-NH3 conversion and yield 30.1 mg h(-1) mg(cat)(-1) NH3 at -0.5 V potential.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Haibo Yin et al.
Summary: PdCu/Cu2O hybrids with mesoporous hollow sphere structure exhibit high selectivity and Faradaic efficiency for NH3 synthesis from NO3(-) due to the electron transfer between Pd and Cu, as well as the blockage of intermediate generation by PdCu alloys.
Article
Chemistry, Physical
Lan-Xin Li et al.
Summary: This study demonstrates that Ti3C2Tx MXenes are promising supports for dispersing and anchoring molecular catalysts to significantly enhance the efficiency of the electroreduction reaction of nitrate to ammonia. The CuPc@MXene electrocatalyst achieved higher selectivity and conversion rates compared to unsupported CuPc, showing potential for other electrochemical catalysis applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Yuanyuan Wang et al.
Summary: This study demonstrates that N-doped carbon nanosheets supported Fe3C nanoflakes exhibit excellent NO3RR performance, mainly due to their optimized electronic structures that enhance nitrate adsorption and reaction kinetics. Mechanistic investigations reveal a reaction pathway of NO3- -> NO2- -> NH3.
Article
Chemistry, Physical
You Xu et al.
Summary: This study demonstrated the in situ electroreduction of pre-synthesized CuO nanoplates into defect-rich metallic Cu nanoplates, which showed significant ammonia production rate, excellent nitrate conversion, high ammonia selectivity, and good electrocatalytic stability. Isotope labelling experiments confirmed that the source of ammonia was from nitrate, and both H-1 NMR and colorimetric methods were utilized to quantify the ammonia yield.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Multidisciplinary
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)
Review
Chemistry, Physical
Nicholas Salmon et al.
Summary: Green hydrogen and ammonia are considered critical components for deep decarbonisation of energy systems and may play a significant role in global energy usage in the future. However, there are gaps in the literature regarding key information such as production and transport costs of ammonia, which need to be addressed for the development of robust hydrogen and ammonia strategies.
SUSTAINABLE ENERGY & FUELS
(2021)
Article
Chemistry, Multidisciplinary
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
Georgina Jeerh et al.
Summary: Traditional technologies relying on fossil fuel exploitation have led to extensive environmental concerns, while hydrogen, as a carbon-free energy carrier, faces challenges in storage and long-distance transportation. However, ammonia as a promising indirect hydrogen storage medium with established storage and transportation links, offers potential as an accessible fuel source. The concept of 'green ammonia' synthesized from renewable energy sources is emerging, potentially opening significant markets and providing a pathway for decarbonization in applications reliant on fossil fuels.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Multidisciplinary
Tianjun Zhang et al.
Summary: This review discusses the development and application of single-atom alloy catalysts, highlighting structural analysis at the atomic scale using microscopy and spectroscopy tools, electronic properties research through X-ray spectroscopy techniques and quantum calculations, and catalytic activity in representative reactions. It also proposes future perspectives for single-atom alloy catalysts from structural, electronic, and reactivity aspects.
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(2019)
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