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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
Zhengwei Cai et al.
Summary: In this study, Ni-doped TiO2 nanoribbon array on titanium plate (Ni-TiO2/TP) is reported as a highly active NO2RR electrocatalyst, which can simultaneously produce valuable ammonia (NH3) and eliminate NO-2 pollutants in water bodies. The catalyst exhibits a large NH3 yield of 380.27 mmol/h/cm2 and a high Faradaic efficiency of 94.89%, surpassing TiO2/TP. Density functional theory calculations reveal that Ni doping enhances intrinsic electrical conductivity and optimizes the adsorptive free energy of intermediates, leading to high selectivity of NO2--to-NH3 conversion.
MATERIALS TODAY ENERGY
(2023)
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)
Review
Chemistry, Multidisciplinary
Jie Liang et al.
Summary: Designing genuine electrocatalysts that can selectively reduce NOx- to produce NH3 is crucial for sustainable ammonia production, environmental protection, and nitrogen cycle rebalancing. Since 2020, research on NH3 electrosynthesis from NOx- has made progress, thanks to advancements in electrode design. Understanding state-of-the-art catalytic systems is essential for implementing this clean technology in industry. This overview provides insights into well-designed denitrifying electrocatalysts, focusing on performance, mechanisms, and upgraded devices, and identifies optimization ideas and challenges for future works in NH3 production.
Article
Chemistry, Multidisciplinary
Hui Zhang et al.
Summary: This study reports a graphene-nanochainmail-protected iron nanoparticle (Fe@Gnc) electrocatalyst, which exhibits superior nitrate removal efficiency and high nitrogen selectivity, along with exceptional stability and durability. The conductive graphene nanochainmail effectively protects the internal iron active sites, allowing Fe@Gnc to maintain its long-lasting electrochemical nitrate catalytic activity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Gang Huang et al.
Summary: A high ratio of active nitrogen-doped hard carbon (PTA-Lys-800) was synthesized by the classical Mannich reaction and showed outstanding cycling stability and rate performance in sodium-ion batteries. This was attributed to its stable hierarchical pore structure, abundant defects, and a high proportion of N-5 formed during the carbonization process. The study presents a new method for designing carbonaceous anode materials with high capacity and long cycle life.
Article
Chemistry, Inorganic & Nuclear
Ailin Zhang et al.
Summary: A FeP@TiO2 nanoribbon array on a titanium plate is a highly efficient and durable catalyst for the electroreduction of nitrite to ammonia, achieving a large ammonia yield of 346.6 μmol h(-1) cm(-2) and a high Faradaic efficiency of 97.1%. This catalyst demonstrates excellent selectivity, stability, and durability for ammonia production under laboratory conditions.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Yuchun Ren et al.
Summary: In this study, an efficient electrocatalyst Ru-TiO2/TP is proposed for the reduction of NO2- to NH3. It achieves an ultra-large NH3 yield and high Faradaic efficiency compared to its TiO2/TP counterpart. Moreover, the reaction mechanism is studied by theoretical calculation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Sai Huang et al.
Summary: In this study, a scalable and low-cost electrocatalyst was designed using a simple method, which involves the growth of Cu-based nanoarray with muti-oxidation states directly on a nickel foam substrate. The as-prepared Cu2 + 1O@Cu/NF nanoarrays exhibited high activity, high selectivity, and long-term stability for nitrate reduction reaction (NO3RR) wastewater valorization to ammonia (NH3). The impressive performance was attributed to the electron redistribution with abundant oxygen vacancies and favorable charge/mass transfer.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Xun He et al.
Summary: This study verifies that CoP nanoparticle-decorated TiO2 nanoribbon array on Ti plate (CoP@TiO2/TP) is a highly efficient electrocatalyst for the selective reduction of NO2- to NH3. The freestanding CoP@TiO2/TP electrode delivers a large NH3 yield of 849.57 mmol h(-1) cm(-2) and a high Faradaic efficiency (FE) of 97.01% with good stability in 0.1 M NaOH solution with NO2-. Remarkably, the subsequently fabricated Zn-NO2- battery achieves a high power density of 1.24 mW cm(-2) while delivering a NH3 yield of 714.40 mg h(-1) cm(-2).
Article
Chemistry, Applied
Huijuan Jing et al.
Summary: Electrochemical nitrate reduction reaction (eNO3RR) is a potential route for decentralized ammonia (NH3) synthesis. This study investigates the competition between nitrite (HNO2) and ammonia during the reaction using a FeN4 single-atom catalyst. The results provide mechanistic insights into the selectivity of NH3 and HNO2 and can help design highly active and selective catalysts for eNO3RR.
CHINESE JOURNAL OF CATALYSIS
(2023)
Review
Chemistry, Inorganic & Nuclear
Wei Song et al.
Summary: This review discusses the reaction mechanism of the electrochemical reduction of NO3- and systematically summarizes recent developments in electrocatalysts for the NO3-RR. Various design strategies to enhance the performance of NO3-RR, such as defect engineering, rational structure design, strain engineering, and constructing heterostructures, are discussed. The authors also illustrate how understanding these optimization strategies can provide fundamental insights into the yield rate, faradaic efficiency, and selectivity of electrocatalysts for NH3 synthesis.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Donglin Zhao et al.
Summary: This study reports that a TiO2-x nanobelt array with oxygen vacancies can convert nitrite into ammonia with high electrocatalytic efficiency and yield in alkaline solution.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Qiuyue Chen et al.
Summary: In this study, Cu2O particles self-supported on Cu foam with enriched oxygen vacancies were developed as efficient catalysts for selective reduction of nitrite to ammonia. The catalyst exhibited a high NH3 yield rate and Faradaic efficiency under experimental conditions, providing a new approach for rational design of Cu-based catalysts for NH3 electrosynthesis.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xi Zhang et al.
Summary: This review highlights the recent progress and applications of electrochemical nitrite reduction, including the preparation of gaseous and liquid products, catalyst selection, and understanding of reaction mechanisms. The challenges and opportunities in this field are analyzed as well.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xingchuan Li et al.
Summary: In this study, PdFe1 single-atom alloy is developed as an effective electrocatalyst for nitrogen reduction reaction (NRR). Mechanistic investigations reveal that Pd-coordinated Fe single atoms serve as active centers, enabling efficient N-2 activation and exhibiting high selectivity and stability for the NRR.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Zhimin Song et al.
Summary: In this study, a porous carbon material with oxygen-containing groups was developed to enhance the yield rate and Faradaic efficiency of nitrogen electroreduction to ammonia. The introduction of oxygen-containing groups effectively lowered the energy barrier of hydrogenation and suppressed the competing hydrogen evolution reaction, thereby promoting nitrogen electroreduction to ammonia.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Electrochemistry
Enhui Jiang et al.
Summary: This study successfully develops a new bifunctional electrocatalyst Co/BCTs by using metallic Co particles grown on/in the surface of biomass carbon tubes derived from natural cotton fibers. The Co/BCTs catalyst exhibits excellent performance for oxygen evolution reaction (OER), hydrogen evolution reaction (HER), and overall water splitting. This work provides new opportunities and potential for developing high-efficiency noble-metal-free electrocatalysts from natural biological derived materials.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Ling Ouyang et al.
Summary: This work proposes a high-active catalyst, Cu nanoparticles decorated juncus-derived carbon, for the conversion of nitrite to ammonia, achieving high Faradaic efficiency and satisfactory yield. The study also provides insightful understanding of the internal catalytic mechanism through computational calculations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
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
Nanoscience & Nanotechnology
Fanfan Ni et al.
Summary: This study reports a highly active zero-valence iron@periodic mesoporous organosilicon (Fe@PMO) nanocomposite for repairing nitrate-polluted water. By utilizing the characteristic of mesoporous organosilica, this material is able to spatially confine the iron nanoparticles and prevent the corrosion of electrolyte to the active sites in the process of electrocatalysis. The obtained Fe@PMO catalyst shows excellent nitrate conversion efficiency and nitrogen selectivity.
ACS APPLIED NANO MATERIALS
(2022)
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, Inorganic & Nuclear
Long Hu et al.
Summary: In this study, an amorphous CoB supported on TiO2 nanoarray was found to be an efficient catalyst for NH3 synthesis through electrochemical reduction of NO2-. It exhibited outstanding yield and high faradaic efficiency.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Ngoc Quang Tran et al.
Summary: In this study, the electrocatalytic reduction of NO2- ions to NH3 on a single-atom Ru-modified Cu nanowire array on a three-dimensional copper foam was successfully achieved under ambient conditions. The Ru-Cu NW/CF catalyst exhibited high faradaic efficiency and NH3 yield, which was approximately five times higher than that of the Cu NW/CF catalyst.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Qin Liu et al.
Summary: In this study, a self-standing FeOOH nanotube array on carbon cloth was proposed as a highly active electrocatalyst for the conversion of nitrite to ammonia. The results showed that the catalyst exhibited high conversion efficiency and ammonia yield, and also demonstrated excellent durability in cyclic and long-term tests.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Fei Wang et al.
Summary: In this study, a novel supported cobalt-based catalyst was prepared and optimized, leading to improved catalytic activity and extended catalyst lifespan.
APPLIED CLAY SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Ming Hao et al.
Summary: The study investigates the assembly of MoS2 nanosheets on a mineral support to improve access to active sites. A pangolin-like composite catalyst consisting of MoS2 nanosheets deposited on tourmaline was synthesized, which degrades pollutants more effectively than pure MoS2 nanosheets. This approach represents a new tactic for the cost-effective batch preparation of two-dimensional materials with high catalytic performance.
ENVIRONMENTAL CHEMISTRY LETTERS
(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
Engineering, Environmental
Jing Wang et al.
Summary: In this study, nZVI is reconstructed as an electrocatalyst nZVI@NC, which significantly improves nitrate removal efficiency and N-2 selectivity, while maintaining stable performance in the pH range of 5-11. Selective adsorption of nitrate on the NC layer and efficient cleavage of the N-O bond play key roles in the transformation of nitrate to benign N-2.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Materials Science, Multidisciplinary
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)
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.
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
Electrochemistry
Bin Hui et al.
ELECTROCHIMICA ACTA
(2020)
Article
Energy & Fuels
Cui Quan et al.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
Weibin Qiu et al.
CHEMISTRY-A EUROPEAN JOURNAL
(2020)
Article
Green & Sustainable Science & Technology
David R. Kanter et al.
NATURE SUSTAINABILITY
(2020)
Article
Chemistry, Physical
Hao Li et al.
Article
Chemistry, Multidisciplinary
Wen Hong et al.
CHEMICAL COMMUNICATIONS
(2020)
Review
Chemistry, Multidisciplinary
Lili Zhang et al.
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Engineering, Environmental
Fei Wang et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Multidisciplinary
Li Su et al.
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Chemistry, Physical
Hao Li et al.
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Chemistry, Physical
Shanlin Qiao et al.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Multidisciplinary
Xinwen Peng et al.
ADVANCED MATERIALS
(2019)
Review
Chemistry, Physical
Bryan H. R. Suryanto et al.
Article
Engineering, Environmental
Wei Teng et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2018)
Article
Chemistry, Multidisciplinary
Shishu Zhu et al.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2017)
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Chemistry, Physical
Ya-Meng Fan et al.
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Engineering, Environmental
Hyeyoung Shin et al.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2014)
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Di Zhu et al.
Review
Multidisciplinary Sciences
James N. Galloway et al.
