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Article
Chemistry, Inorganic & Nuclear
Xun He et al.
Summary: In this study, Fe3O4 nanoparticles decorated TiO2 nanoribbon array on titanium plate (Fe3O4@TiO2/TP) was developed as an efficient electrocatalyst for NO3- reduction to produce NH3. Fe3O4@TiO2/TP achieved a high NH3 yield and Faradaic efficiency in 0.1 M phosphate-buffered saline and 0.1 M NO3- electrolyte, and demonstrated excellent stability during long-time electrolysis.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Xiaoya Fan et al.
Summary: In this study, a novel NO3RR electrocatalyst, Co3O4@TiO2/TP, was reported to exhibit excellent Faradaic efficiency and high NH3 yield, as well as strong electrochemical durability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Haipeng Wang et al.
Summary: A highly efficient electrocatalyst for NO2 reduction to NH3 was reported in this study, which consisted of V-doped TiO2 nanobelt array on a titanium plate. Both experimental results and theoretical calculations revealed that V doping enhanced the electrical conductivity of the nanobelt and optimized the free energy of the TiO2 specialIntscript crystal plane in the potential determining step, resulting in a positive effect on the electrochemical NO2 reduction to NH3. The designed V-TiO2/TP exhibited outstanding electrochemical NO2 reduction performance with a high NH3 yield of 540.8 μmol h-1 cm-2 at -0.7 V and an excellent Faradaic efficiency of 93.2% at -0.6 V versus reversible hydrogen electrode, surpassing TiO2/TP.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Xiuhong Li et al.
Summary: In this study, Ni nanoparticles strutted 3D honeycomb-like porous carbon framework (Ni@HPCF) was fabricated and used as a high-efficiency electrocatalyst for the selective reduction of nitrite to ammonia. The Ni@HPCF electrode achieved a significant ammonia yield of 12.04 mg h(-1) mg(cat.)(-1) and a Faradaic efficiency of 95.1% in 0.1 M NaOH with nitrite, demonstrating good long-term electrolysis stability.
Article
Chemistry, Physical
Xun He et al.
Summary: Nitrite (NO2-), a nitrogen-containing pollutant, is widely present in aqueous solution and causes environmental and health problems. Electro-catalytic reduction of NO2- is a promising and sustainable method to remove NO2- and produce valuable ammonia (NH3). In this study, NiS2 nanoparticles decorated TiO2 nanoribbon array on titanium mesh (NiS2@TiO2/TM) is reported as an excellent electrocatalyst for ambient NH3 synthesis through NO2- reduction reaction (NO2-RR). NiS2@TiO2/TM demonstrates a satisfactory NH3 yield of 591.9 lmol h-1 cm-2 and a high Faradaic efficiency of 92.1% when tested in NO2--containing solution. Additionally, it exhibits remarkable stability during a 12-hour electrolysis test.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Luocai Yi et al.
Summary: Ammonia is an important chemical raw material, but the current synthesis process suffers from high energy consumption and CO2 emission. The electrochemical nitrite reduction reaction (NO2-RR) offers an alternative path for ammonia synthesis. This study presents a large-scale route for synthesizing 2H-MoS2 nanosheets (MoS2 NSs) as electrocatalysts for efficient conversion of NO2-RR to ammonia, achieving a high ammonia production rate of 8.99 mg cm-2 h-1 with a faradaic efficiency of 93.52%. A hybrid electrolytic cell is constructed using MoS2 NSs as the NO2-RR cathode and oxygen evolution reaction (OER) in alkaline solution, enabling continuous and stable ammonia production at a rate of 38.79 mg cm-2 h-1 for over 120 hours.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Yuntong Sun et al.
Summary: In this study, high-entropy metal-organic frameworks (HE-MOFs) and their derivatives were used as precursors to produce different products under different pH conditions. The results showed that these materials exhibited favorable kinetics for N-2 electrofixation and an asymmetric acidic/alkaline device prototype showed remarkable activities.
Article
Chemistry, Analytical
Hao Zhang et al.
Summary: This study reports the preparation of efficient CoP catalysts for electrocatalytic reduction of nitrite and nitrate to synthesize ammonia under alkaline conditions. The catalyst demonstrated high ammonia generation rate and faradic efficiency, as well as good stability. This work showcases the potential of carbon cloth supported metal phosphides in electrocatalytic NOx conversion for efficient ammonia production.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Yaojing Luo et al.
Summary: In this study, the structural regulation of VSe2 through amorphization engineering led to the development of amorphous VSe2-x nanosheets with enriched Se-vacancies, resulting in significantly enhanced NRR activity. These amorphous VSe2-x nanosheets exhibited high NH3 yield and faradaic efficiency in NH3 synthesis, outperforming their crystalline counterparts.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Inorganic & Nuclear
Jie Liang et al.
Summary: The ever-increasing anthropic NO emission has caused severe environmental issues. Electrochemical reduction of NO has emerged as a promising approach for sustainable NO abatement and NH3 synthesis, but requires highly active and selective electrocatalysts. In this study, a CoP nanowire array on Ti mesh was used as an efficient catalyst for converting NO to NH3. This catalyst demonstrated excellent activity, selectivity, durability, and was also used as a cathode catalyst for a Zn-NO battery.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Multidisciplinary
Chenxu Zhao et al.
Summary: This article provides an up-to-date review of NRR catalysts, including experimental and theoretical works. The candidates are classified into metals, metal compounds, and metal-free catalysts, and the importance of descriptors and effective methods from pioneering works are highlighted.
MATERIALS TODAY PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Peng Shen et al.
Summary: Combining catalyst and electrolyte engineering, a high-efficiency electrocatalytic nitrogen reduction reaction (NRR) is achieved using a Se-vacancy-rich WSe2-x catalyst in water-in-salt electrolyte (WISE), which suppresses H2 evolution, improves N2 affinity, and enhances active site pi-back-donation ability for promoting both activity and selectivity of NRR. The WSe2-x in 12m LiClO4 exhibits excellent faradaic efficiency and NH3 yield, among the highest reported to date.
Article
Chemistry, Physical
Guilai Wen et al.
Summary: In this study, ambient ammonia production via electrochemical nitrite (NO2-) reduction catalyzed by a CoP nanoarray on titanium mesh (CoP NA/TM) is demonstrated. The catalyst showed a high NH3 yield and Faradaic efficiency in alkaline solution, presenting a potential alternative to industrial ammonia production.
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
Multidisciplinary Sciences
Sebastian Cisneros et al.
Summary: A highly active and stable Ru/TiO2 catalyst for CO2 methanation, prepared by a sol-gel method, showed much higher activity compared to state-of-the-art catalysts. The high concentration of oxygen vacancies in the sol-gel catalyst played a dual role in activating CO2 and transferring electrons to the Ru sites, resulting in increased methanation activity.
Article
Multidisciplinary Sciences
Milind Jain et al.
Summary: This study conducted a detailed analysis of the potential economic risks and benefits of using ammonia as an energy storage medium in the food, energy, and trade sectors. The results showed that local sales and export pathways were profitable, while the energy storage pathway incurred losses. The combined use pathway can be more profitable under certain conditions such as higher predicted ammonia prices and larger demand for low-carbon ammonia.
Article
Chemistry, Physical
Qian Liu et al.
Summary: In this study, an efficient electrocatalyst consisting of Ag nanoarray and NiO nanosheets array on carbon cloth as support was reported for the selective reduction of nitrite to ammonia. The catalyst exhibited high ammonia yield and Faradaic efficiency in alkaline solution.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Xun He et al.
Summary: In this study, Ni nanoparticles supported on molasses-derived carbon sheets were reported as an electrocatalyst for the reduction of NO2- to NH3. The electrocatalyst exhibited high NH3 yield and remarkable electrochemical stability in alkaline solutions.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Ling Ouyang et al.
Summary: Electrochemical nitrite reduction provides an environmentally friendly method for removing hazardous NO2- and synthesizing sustainable NH3. A P-doped TiO2 nanobelt array supported on titanium plate (P-TiO2/TP) acts as a highly efficient electrocatalyst for the reduction of NO2-, achieving a satisfactory faradaic efficiency of 90.6% and a large NH3 yield of 560.8 mu mol h(-1) cm(-2), surpassing pristine TiO2/TP. In addition, the catalytic mechanism is also revealed through theoretical calculations.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Chengchen Liu et al.
Summary: In this study, a CeO2 nanoparticle decorated three-dimensional carbon skeleton derived from Juncus was proposed as an active and stable electrocatalyst for N-2-to-NH3 conversion. The nanohybrid showed a high NH3 yield and favorable durability.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Electrochemistry
Shaoxiong Li et al.
Summary: The study reports a three-dimensional catalyst for the reduction of NO2- to produce NH3, demonstrating high activity, excellent selectivity, and durability.
Article
Chemistry, Multidisciplinary
Rong Zhang et al.
Summary: In this study, a Zn-NO2- battery with electrocatalytic properties was developed, which can simultaneously degrade NO2-, produce NH3, and generate electricity. Nanoparticle-assembled carbon-doped cobalt oxide hollow nanotubes showed high efficiency for the NO2- reduction reaction, improving the energy conversion rate of NH3 production. This research not only provides a new approach for sustainable energy supply and NH3 electrosynthesis but also offers an attractive electrocatalytic method for the degradation of NO2- pollutants in wastewater.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Xian-Wei Lv et al.
Summary: This study developed a promising catalyst VN@NSC with VN nanodots embedded in an ultrathin N,S-codoped carbon matrix for efficient ENRR, demonstrating high activity, stability, pH independence, and high NH3 yield. Additionally, VN@NSC showed significant potential for practical applications in Zn-N-2 aqueous batteries.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Multidisciplinary
Laiquan Li et al.
Summary: In this review, we critically evaluate the application of main-group elements in electrocatalytic nitrogen reduction, present methodologies for N2 activation and HER suppression, and demonstrate the potential of MGEs-based mechanisms for smart design. The conclusion shows that MGEs can significantly enhance electrochemical N2 fixation.
Article
Chemistry, Multidisciplinary
Sarah E. Braley et al.
Summary: This work presents a graphite-conjugated diimine macrocyclic Co catalyst that efficiently reduces nitrite to ammonium on graphitic carbon electrodes. Compared to the molecular analogue, this catalyst exhibits a higher reaction rate and may involve a different reaction mechanism.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Multidisciplinary
Xue Zhao et al.
Summary: The electrochemical nitrogen reduction reaction, which produces ammonia, is environmentally friendly and suitable for rural economy, but faces challenges in catalysts and quantitative determination.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ke Chu et al.
Summary: A novel hexagonal BN quantum dots (BNQDs) decorated Nb2CTx-MXene (BNQDs@Nb2CTx) has been explored as an efficient NRR catalyst, which shows optimum NRR activity, high Faradaic efficiency, and excellent stability, outperforming most of the state-of-the-art NRR catalysts. The synergistic interplay of BNQDs and Nb2CTx creates unique interfacial B sites serving as NRR catalytic centers, enhancing N-2 activation and impeding H-2 evolution.
Article
Multidisciplinary Sciences
Xiyang Cai et al.
Summary: The lithium-mediated electrochemical NRR process shows promise as a green synthesis method for ammonia, but further research is needed to improve efficiency and stability by understanding and optimizing the mechanism involved. High ammonia yield and Faradaic efficiency were achieved through the use of freshly deposited lithium at high current density.
Article
Chemistry, Multidisciplinary
Debabrata Chanda et al.
Summary: Ammonia is a key chemical in the fertilizer industry and a promising energy carrier for fuel cell applications, with efforts to find sustainable alternatives to traditional production methods. The electrochemical nitrogen reduction reaction (ENRR) is seen as a green alternative to the energy-intensive Haber-Bosch process, but challenges remain in the lack of highly efficient and cheap catalysts. Understanding catalyst activity, selectivity, and stability, as well as the mechanism of the ENRR process, is crucial for improving its efficiency.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Ying Guo et al.
Summary: This study presents a highly efficient Pd-doped TiO2 nanoarray electrode for ammonia production through nitrate electroreduction, achieving high yields and selectivity. By introducing Pd, the adsorption abilities of intermediates were weakened, leading to record-high NH3 yield, NH3 FE, and nitrate conversion.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Yongwen Ren et al.
Summary: The translation provides an overview of the current status and challenges of the electrocatalytic N-2 reduction reaction (NRR) for ammonia synthesis, focusing on strategies for inhibiting the competing hydrogen evolution reaction (HER) to achieve high NRR selectivity. The article also discusses strategies for suppressing H-2 evolution based on NRR mechanisms, kinetics, thermodynamics, and electrocatalyst design.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Physical
Changhong Wang et al.
Summary: In this study, Ni nanosheet arrays with Ni vacancies exhibited outstanding electrocatalytic performances towards selective nitrite reduction to ammonia and semi-dehydrogenation of tetrahydroisoquinolines. The decrease in electronic cloud density induced by the Ni vacancies improved NO2- adsorption and NH3 desorption, leading to high performance in nitrite-to-ammonia conversion. Additionally, a bifunctional two-electrode electrolyzer was constructed for simultaneous production of ammonia and dihydroisoquinoline with robust stability and high selectivity.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Lvlv Ji et al.
Article
Chemistry, Physical
Han Wang et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Green & Sustainable Science & Technology
David R. Kanter et al.
NATURE SUSTAINABILITY
(2020)
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Multidisciplinary Sciences
Baocang Liu et al.
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Iqra Nabi et al.
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ADVANCED ENERGY MATERIALS
(2020)
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Jianan Gao et al.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
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JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2014)
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Timur Kandemir et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2013)
Article
Electrochemistry
Luca Mattarozzi et al.
ELECTROCHIMICA ACTA
(2013)
Article
Chemistry, Physical
Marta C. Figueiredo et al.
Review
Multidisciplinary Sciences
James N. Galloway et al.
