Coeffect of Co-Mn in bimetallic oxide catalyst for ultrafast electrochemical reduction of nitrate: Insight into ion interaction

Article Chemistry, Physical

Unveiling selective nitrate reduction to ammonia with Co3O4 nanosheets/TiO2 nanobelt heterostructure catalyst

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)

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Article Engineering, Environmental

Co-Mn spinel oxides trigger peracetic acid activation for ultrafast degradation of sulfonamide antibiotics: Unveiling critical role of Mn species in boosting Co activity

Longlong Zhang et al.

Summary: Through the study of different ratios of cobalt-manganese spinel oxides (Co-Mn spinel oxides), Co1.1Mn1.9O4 was found to exhibit excellent performance in the activation of peracetic acid (PAA), outperforming most reported heterogeneous catalysts. Acetylperoxyl radical (CH3C(O)OO?) was identified as the predominant oxidizing species responsible for the degradation of sulfamethoxazole (SMX). Doping with manganese not only promoted electron transfer and accelerated reduction of cobalt(III) to cobalt(II), but also lowered the energy barrier for PAA activation. Additionally, the presence of chlorine greatly facilitated SMX degradation. This research provides new insights into bimetallic activation of PAA and advances the application of PAA-based AOPs.

WATER RESEARCH (2023)

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Article Chemistry, Physical

Electrocatalytic reduction of nitrate to ammonia on low-cost manganese-incorporated Co3O4 nanotubes

Di Liu et al.

Summary: In this study, the incorporation of manganese into the Co3O4 lattice is found to achieve high activity and selectivity in electrocatalytic nitrate reduction reaction (e-NO3RR). The Mn-incorporated Co3O4 nanotubes exhibit remarkable e-NO3RR activity with a high ammonia yield rate of 35 mg h-1 cm-2 and excellent selectivity with a Faraday efficiency for ammonia up to 99.5% in neutral media, outperforming transition-metal oxides.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

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Article Multidisciplinary Sciences

La- and Mn-doped cobalt spinel oxygen evolution catalyst for proton exchange membrane electrolysis

Lina Chong et al.

SCIENCE (2023)

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Article Chemistry, Physical

Atomically dispersed iron enables high-efficiency electrocatalytic conversion of nitrate to dinitrogen on a N-coordinated mesoporous carbon architecture

Jianwei Fan et al.

Summary: An atomically dispersed iron coordinated with nitrogen on an ordered mesoporous carbon framework was developed as an electrocatalyst for denitrification. The catalyst showed a significantly higher N-2 conversion rate compared to other materials, and balanced the adsorption of nitric oxide to promote N-2 formation through the confinement of solvated NO in mesochannels.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

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Article Engineering, Chemical

B-site cation synergy in Mn doped LaCoO3 for enhanced electrocatalysts for electrochemical reduction of nitrate

Weizhe Zhang et al.

Summary: This study evaluated the performance of LaCoO3 doped with manganese cation for electroreduction of nitrate. The optimized doped material LaMn0.6Co0.4O3 achieved 41.92% higher nitrate removal efficiency than LaCoO3, showing good function under different operating conditions and outstanding stability after ten consecutive cycles. Doped manganese cation not only affected the valence of cobalt cation but also activated adsorbed oxygen to offer electron and accelerate electron transfer.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

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Article Chemistry, Physical

Hierarchically interconnected porous MnxCo3-xO4 spinels for Low-temperature catalytic reduction of NO by CO

Shaomian Liu et al.

Summary: Hierarchically interconnected porous (HIP) MnxCo3-xO4 spinels synthesized by a facile citric acid-assisted sol-gel method show high efficiency as catalysts for CO-DeNO(x), with a wide active-temperature window and enhanced catalytic performance.

JOURNAL OF CATALYSIS (2022)

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Article Engineering, Chemical

Cu particles confined in three-dimensional open porous carbon foam monolith as highly efficient electrode for electroreduction of nitrate with significant alleviation of nitrite

Fukuan Li et al.

Summary: This study developed a novel 3D open porous carbon foam electrode for the electroreduction of nitrate, which exhibited high efficiency and selectivity in nitrate removal.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

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Article Engineering, Environmental

Electrochemical reduction of nitrate in a catalytic carbon membrane nano-reactor

Jing Ma et al.

Summary: This study introduces a porous tubular carbon membrane as the electrode with catalysts for nitrate removal reactions. The achieved nitrate removal rate is significantly higher than other methods, with high conversion and selectivity to nitrogen. The use of Cu-Pd bimetal catalysts inside the membrane enhances activity and selectivity, leading to improved nitrate removal efficiency.

WATER RESEARCH (2022)

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Article Chemistry, Physical

Electrochemical Synthesis of Ammonium from Nitrates via Surface Engineering in Cu2O(100) Facets

Jiangzhou Qin et al.

Summary: The study compared the reactivity of Cu2O(100) and Cu2O(111) facets for selectively reducing nitrate to ammonia, with Cu2O(100) showing a higher NH4+ yield rate and lower energy barrier, providing reliable evidence for crystal facet engineering to improve the selectivity of NO3- to NH4+ conversion.

ACS APPLIED ENERGY MATERIALS (2022)

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Article Chemistry, Physical

Regulating surface oxygen species on copper (I) oxides via plasma treatment for effective reduction of nitrate to ammonia

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)

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Article Engineering, Environmental

Ceramic nanofiber membrane anchoring nanosized Mn2O3 catalytic ozonation of sulfamethoxazole in water

Yulong Yang et al.

Summary: Catalytic ceramic nanofiber membranes were prepared by anchoring Mn2O3 nanoparticles on attapulgite nanofibers. The membranes exhibited high catalytic efficiency in degrading emerging contaminants such as sulfamethoxazole, and showed wide applicability for real water matrix.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Role of Electronic Structure on Nitrate Reduction to Ammonium: A Periodic Journey

O. Quinn Carvalho et al.

Summary: Electrocatalysis is a promising method for converting waste nitrate to ammonia and improving the nitrogen cycle. By measuring and modeling, the competition between the hydrogen evolution reaction (HER) and the nitrate reduction reaction (NO3RR) can be understood, and the catalytic performance and selectivity of various transition metals can be explored.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2022)

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Article Engineering, Chemical

Perovskite oxide LaMO3-d(M = Fe, Co, Ni and Cu) cathode for efficient electroreduction of nitrate

Wen-Jian Yang et al.

Summary: In this study, four perovskite oxide cathodes were used for the reduction of nitrate (NO3--N), and La2CuO4 showed the best catalytic activity. The addition of chloride improved the selectivity of N-2. The mechanism of NO3--N electroreduction involved both electron-mediated and H*-mediated pathways, utilizing oxygen vacancies and the redox cycle of Cu(I)-Cu(II)-Cu(I).

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

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Article Nanoscience & Nanotechnology

High-Efficiency Electrochemical Nitrate Reduction to Ammonia on a Co3O4 Nanoarray Catalyst with Cobalt Vacancies

Zhiqin Deng et al.

Summary: This study demonstrates that Co3O4 nanosheet array with cobalt vacancies can enhance the efficiency of nitrate reduction reaction and achieve carbon-free ammonia synthesis with high yield.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Review Chemistry, Physical

Iron-Based Nanocatalysts for Electrochemical Nitrate Reduction

Chuqi Wang et al.

Summary: Nitrate poses a threat to aquatic ecosystems and human health, and the electrochemical nitrate reduction reaction is considered an effective method to reduce nitrate. Iron-based nanocatalysts, with advantages of nontoxicity and low cost, have been widely studied for electrochemical nitrate reduction. This review summarizes the recent progress in the synthesis, structural design, performance enhancement, and conversion mechanism of iron-based nanocatalysts, and discusses the challenges and future directions in the development of low-cost and highly-efficient catalysts.

SMALL METHODS (2022)

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Article Chemistry, Multidisciplinary

Mn-O Covalency Governs the Intrinsic Activity of Co-Mn Spinel Oxides for Boosted Peroxymonosulfate Activation

Zhi-Yan Guo et al.

Summary: The covalency of TM-O bonds plays a critical role in governing the intrinsic catalytic activity of bimetallic spinel oxides, enhancing electron transfer and favoring interactions with PMS. By balancing PMS adsorption and metal reduction reactions, remarkable catalytic activities for PMS activation and pollutant degradation can be achieved, leading to the development of more active and robust metal oxide catalysts.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Engineering, Environmental

Nitrate Removal in an Electrically Charged Granular-Activated Carbon Column

Yiming Su et al.

Summary: The study developed a flow-through, electrically charged, granular-activated carbon-filled column for effective nitrate removal from groundwater. High removal rate was achieved through a combination of electrosorption and electrochemical transformation, with the column being readily regenerated by reversing the polarity of the applied potential.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2021)

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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)

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Article Chemistry, Physical

Efficient defect engineering in Co-Mn binary oxides for low-temperature propane oxidation

Ganggang Li et al.

Summary: Novel amorphous Co-Mn binary oxides with enhanced defect were fabricated through a facile self-redox approach, showing remarkable catalytic activity for propane oxidation with the best T-90 at 207 degrees Celsius. In situ spectroscopy technologies were utilized to explore the structure-activity relationship and degradation mechanism of propane oxidation under real reaction conditions. As an effective defect engineering strategy, amorphous binary oxides exhibit excellent activity and can provide insights for developing efficient VOCs catalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Chemistry, Physical

Earth-abundant elements a sustainable solution for electrocatalytic reduction of nitrate

Ana S. Fajardo et al.

Summary: The study reveals that carbon (as boron-doped diamond) and tin have the highest average selectivity towards nitrogen gas evolution (55% and 64% respectively), outperforming platinum (Pt) which only has 1% selectivity, while having comparable energy efficiencies per order removal of nitrate. Therefore, earth-abundant elements for electrocatalysis show tremendous promise as innovative, low-cost, and sustainable processes for the water treatment marketplace.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

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Article Engineering, Environmental

Nitrate, arsenic and fluoride removal by electrodialysis from brackish groundwater

Mehran Aliaskari et al.

Summary: This study investigated the impact of operational and water quality parameters on brackish water decontamination using a batch electrodialysis (ED) system. The results showed the significance of ionic characteristics in ED, with nitrate concentrations satisfying guideline threshold in all experiments. Lowest arsenic(V) concentration was 35 mu g/L at the highest electric potential, 25 V, demonstrating the potential of ED in environmentally friendly processes.

WATER RESEARCH (2021)

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Article Engineering, Environmental

Highly selective electrochemical nitrate reduction using copper phosphide self-supported copper foam electrode: Performance, mechanism, and application

Fubing Yao et al.

Summary: The Cu3P/CF composite electrode prepared by growing copper phosphide on copper foam demonstrated enhanced electrochemical performance for NO3- reduction with high N-2 selectivity, showing potential for practical applications in electrochemical denitrification processes.

WATER RESEARCH (2021)

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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)

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Article Agricultural Engineering

Synergetic effects of biochars and denitrifier on nitrate removal

Yuqi Liu et al.

Summary: This study investigated the effects of integrating denitrifiers with biochars on nitrate removal, finding that the physiochemical properties of biochars influence bacteria attachment and nitrate removal. Immobilizing denitrifiers on biochars significantly improves nitrate removal efficiencies. The integration of denitrifier with biochars has synergetic effects on promoting nitrate removal, enhancing the expression and activity of nitrate reductase and electron transport system activity.

BIORESOURCE TECHNOLOGY (2021)

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Article Engineering, Environmental

Efficient electrochemical nitrate removal on Cu and nitrogen doped carbon

Xueyang Zhao et al.

Summary: Cu-NPC composite exhibited excellent nitrate removal performance due to the synergy of Cu nanoparticles and NPC carrier, which facilitated nitrate conversion to nitrite on Cu nanoparticles and accelerated subsequent hydrogenation on NPC, providing a new paradigm for non-noble metal and carbon-based composite electrocatalyst design for nitrate reduction.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Environmental Sciences

Bi2O3 nanosheets arrays in-situ decorated on carbon cloth for efficient electrochemical reduction of nitrate

Miao Chen et al.

Summary: By synthesizing Bi2O3-CC material, the nitrate removal efficiency was improved, and the presence of Cl- was found to benefit the NITRR process. Mechanistic studies revealed that both direct electron transfer and atomic H* contribute significantly to the reduction of nitrate to ammonia.

CHEMOSPHERE (2021)

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Article Environmental Sciences

Influence of tin (Sn) doping on Co3O4 for enhanced photocatalytic dye degradation

S. P. Keerthana et al.

Summary: Wastewater remediation, particularly regarding dye degradation, has been a key focus in recent studies. The use of photocatalysis, specifically with Sn doped Co3O4 nanoparticles, shows promising results for efficient dye degradation in wastewater treatment.

CHEMOSPHERE (2021)

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Article Chemistry, Multidisciplinary

Unveiling the Activity Origin of a Copper-based Electrocatalyst for Selective Nitrate Reduction to Ammonia

Yuting Wang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

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Article Engineering, Environmental

Enhanced reduction of nitrate by noble metal-free electrocatalysis on P doped three-dimensional Co3O4 cathode: Mechanism exploration from both experimental and DFT studies

Jianan Gao et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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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)

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Article Chemistry, Physical

Boosting Selective Nitrate Electroreduction to Ammonium by Constructing Oxygen Vacancies in TiO2

Ranran Jia et al.

ACS CATALYSIS (2020)

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Article Nanoscience & Nanotechnology

Iron-Catalyzed Selective Denitrification over N-Doped Mesoporous Carbon

Wei Teng et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Multidisciplinary

Efficient Ammonia Electrosynthesis from Nitrate on Strained Ruthenium Nanoclusters

Jie Li et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2020)

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Article Materials Science, Multidisciplinary

High-temperature oxidation of the Crofer 22 H ferritic steel with Mn1.45Co1.45 Fe0.1O4 and Mn1.5Co1.5O4 spinel coatings under thermal cycling to conditions and its properties

M. Bednarz et al.

MATERIALS CHEMISTRY AND PHYSICS (2019)

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Article Engineering, Environmental

Indirect electrochemical reduction of nitrate in water using zero-valent titanium anode: Factors, kinetics, and mechanism

Fubing Yao et al.

WATER RESEARCH (2019)

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Article Chemistry, Physical

Metal-defected spinel MnxCo3-xO4 with octahedral Mn-enriched surface for highly efficient oxygen reduction reaction

Ke Li et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

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Article Chemistry, Physical

Mn Cations Control Electronic Transport in Spinel CoxMn3-xO4 Nanoparticles

Anuj Bhargava et al.

CHEMISTRY OF MATERIALS (2019)

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Article Engineering, Chemical

Efficient nitrate removal from water using selected cathodes and Ti/PbO2 anode: Experimental study and -mechanism verification

Xufeng Rao et al.

SEPARATION AND PURIFICATION TECHNOLOGY (2019)

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Article Chemistry, Physical

Bifunctional porous Co-doped NiO nanoflowers electrocatalysts for rechargeable zinc-air batteries

Jinmei Qian et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

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Article Chemistry, Physical

Non-precious Co3O4-TiO2/Ti cathode based electrocatalytic nitrate reduction: Preparation, performance and mechanism

Jianan Gao et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

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Article Engineering, Environmental

Selective Nitrate Reduction to Dinitrogen by Electrocatalysis on Nanoscale Iron Encapsulated in Mesoporous Carbon

Wei Teng et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

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Article Chemistry, Multidisciplinary

Outstanding Methane Oxidation Performance of Palladium-Embedded Ceria Catalysts Prepared by a One-Step Dry Ball-Milling Method

Maila Danielis et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2018)

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Review Chemistry, Physical

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

Sergi Garcia-Segura et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

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Article Engineering, Environmental

UV Photolysis of Chloramine and Persulfate for 1,4-Dioxane Removal in Reverse-Osmosis Permeate for Potable Water Reuse

Wei Li et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2018)

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Article Engineering, Environmental

Degradation of Bisphenol A by Peroxymonosulfate Catalytically Activated with Mn1.8Fe1.2O4 Nanospheres: Synergism between Mn and Fe

Gui-Xiang Huang et al.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2017)

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Influence of pre-reduction on microstructure homogeneity and electrical properties of APS Mn1.5Co1.5O4 coatings for SOFC interconnects

Ying-Zhen Hu et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2017)

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Electrochemical nitrate reduction by using a novel Co3O4/Ti cathode

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WATER RESEARCH (2017)

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Development and reaction mechanism of efficient nano titanium electrode: Reconstructed nanostructure and enhanced nitrate removal efficiency

Xuejiao Ma et al.

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Selective nitrate removal from groundwater using a hybrid nanofiltration-reverse osmosis filtration scheme

Razi Epsztein et al.

CHEMICAL ENGINEERING JOURNAL (2015)

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

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Powering denitrification: the perspectives of electrocatalytic nitrate reduction

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Enhanced Activity and Selectivity of Carbon Nanofiber Supported Pd Catalysts for Nitrite Reduction

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ENVIRONMENTAL SCIENCE & TECHNOLOGY (2012)

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An Earth-system perspective of the global nitrogen cycle

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NATURE (2008)

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Removal of nitrate from aqueous solution by nitrate selective ion exchange resins

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Evidence for the presence of Mn(III) intermediates in the bacterial oxidation of Mn(II)

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PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2005)

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Coeffect of Co-Mn in bimetallic oxide catalyst for ultrafast electrochemical reduction of nitrate: Insight into ion interaction

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