The marine nitrogen cycle: new developments and global change

Nature Reviews Microbiology, Год журнала: 2022, Номер 20(7), С. 401 - 414

Опубликована: Фев. 7, 2022

Язык: Английский

---

Second and Outer Coordination Sphere Effects in Nitrogenase, Hydrogenase, Formate Dehydrogenase, and CO Dehydrogenase

Chemical Reviews, Год журнала: 2022, Номер 122(14), С. 11900 - 11973

Опубликована: Июль 18, 2022

Gases like H

Язык: Английский

---

Nitrogen cycling processes and the role of multi-trophic microbiota in dam-induced river-reservoir systems

Water Research, Год журнала: 2021, Номер 206, С. 117730 - 117730

Опубликована: Сен. 30, 2021

Язык: Английский

---

Modulating the Active Hydrogen Adsorption on Fe─N Interface for Boosted Electrocatalytic Nitrate Reduction with Ultra‐Long Stability

Advanced Materials, Год журнала: 2023, Номер 35(46)

Опубликована: Июль 25, 2023

The electrocatalytic reduction of nitrate (NO3- ) to nitrogen (N2 is an environmentally friendly approach for efficient N-cycle management (toward a nitrogen-neutral cycle). However, poor catalyst durability and the competitive hydrogen evolution reaction significantly impede its practical application. Interface-chemistry engineering, utilizing close relationship between surface/interface microenvironment electron/proton transfer process, has facilitated development catalysts with high intrinsic activity physicochemical durability. This study reports synthesis nitrogen-doped carbon-coated rice-like iron nitride (RL-Fe2 N@NC) electrocatalyst excellent nitrate-reduction (high N2 selectivity (≈96%) NO3- conversion (≈86%)). According detailed mechanistic investigations by in situ tests theoretical calculations, strong hydrogenation ability enhanced enrichment system synergistically contribute rapid nitrogen-containing species, increasing reducing occurrence competing hydrogen-evolution side reaction. Moreover, RL-Fe2 N@NC shows stability, retaining good -to-N2 electrocatalysis more than 40 cycles (one cycle per day). paper could guide interfacial design Fe-based composite nanostructures reduction, facilitating shift toward neutrality.

Язык: Английский

---

Preparation and quantitative analysis of multicenter luminescence materials for sensing function

Nature Protocols, Год журнала: 2023, Номер 18(5), С. 1621 - 1640

Опубликована: Фев. 27, 2023

Язык: Английский

---

Electrocatalytic Upcycling of Nitrate Wastewater into an Ammonia Fertilizer via an Electrified Membrane

Environmental Science & Technology, Год журнала: 2022, Номер 56(16), С. 11602 - 11613

Опубликована: Июль 21, 2022

Electrochemically upcycling wastewater nitrogen such as nitrate (NO3–) and nitrite (NO2–) into an ammonia fertilizer is a promising yet challenging research topic in resource recovery treatment. This study presents electrified membrane made of CuO@Cu foam polytetrafluoroethylene (PTFE) for reducing NO3– to (NH3) NH3 (NH4)2SO4, liquid ready-use. A paired electrolysis process without external acid/base consumption was achieved under partial current density 63.8 ± 4.4 mA·cm–2 on the cathodic membrane, which removed 99.9% feed (150 mM NO3–) after 5 h operation with rate 99.5%. energy 3100 91 g-(NH4)2SO4·m–2·d–1 21.8 3.8 kWh·kg–1-(NH4)2SO4, respectively, almost outcompete industrial production cost Haber–Bosch process. Density functional theory (DFT) calculations unraveled that situ electrochemical conversion Cu2+ Cu1+ provides highly dynamic active species reduction NH3. demonstrated achieve synergistic decontamination nutrient durable catalytic activity stability.

Язык: Английский

---

Oxygen Vacancies‐Rich Metal Oxide for Electrocatalytic Nitrogen Cycle

Advanced Energy Materials, Год журнала: 2023, Номер 14(1)

Опубликована: Ноя. 13, 2023

Abstract The development of industry and agriculture has been accompanied by an artificially imbalanced nitrogen cycle, which threatens human health ecological environments. Electrocatalytic systems have emerged as a sustainable way converting nitrogen‐containing molecules into high value‐added chemicals. However, the construction high‐performance electrocatalysts remains challenging. oxygen vacancy engineering strategy promoted more research efforts to explore structure‐activity relationship between catalytic activity vacancies. This review systematically summarizes recent vacancies‐rich metal oxides for electro‐catalyzing cycling systems, involving electrocatalytic nitrate reduction reaction, nitric oxide C─N coupling, urea oxidation reaction. First, methods characterization vacancies are summarized. Then, effect on is discussed in terms regulating electronic structures electrocatalysts, improving electroconductivity catalysts, lowing energy barrier, strengthening adsorption activation intermediate species. Finally, future directions cycle anticipated.

Язык: Английский

---

Electrocatalyst Microenvironment Engineering for Enhanced Product Selectivity in Carbon Dioxide and Nitrogen Reduction Reactions

ACS Catalysis, Год журнала: 2023, Номер 13(8), С. 5375 - 5396

Опубликована: Апрель 6, 2023

Carbon and nitrogen fixation strategies are regarded as alternative routes to produce valuable chemicals used energy carriers fertilizers that traditionally obtained from unsustainable energy-intensive coal gasification (CO CH4), Fischer–Tropsch (C2H4), Haber–Bosch (NH3) processes. Recently, the electrocatalytic CO2 reduction reaction (CO2RR) N2 (NRR) have received tremendous attention, with merits of being both efficient store renewable electricity while providing preparation fossil-fuel-driven reactions. To date, development CO2RR NRR processes is primarily hindered by competitive hydrogen evolution (HER); however, corresponding for inhibiting this undesired side still quite limited. Considering such complex reactions involve three gas–liquid–solid phases successive proton-coupled electron transfers, it appears meaningful review current improving product selectivity in light their respective mechanisms, kinetics, thermodynamics. By examining developments understanding catalyst design, electrolyte engineering, three-phase interface modulation, we discuss key NRR: (i) targeting molecularly defined active sites, (ii) increasing local reactant concentration at (iii) stabilizing confining intermediates.

Язык: Английский

---

Selective Electrocatalytic Conversion of Nitric Oxide to High Value‐Added Chemicals

Advanced Materials, Год журнала: 2024, Номер 36(18)

Опубликована: Янв. 25, 2024

The artificial disturbance in the nitrogen cycle has necessitated an urgent need for nitric oxide (NO) removal. Electrochemical technologies NO conversion have gained increasing attention recent years. This comprehensive review presents advancements selective electrocatalytic of to high value-added chemicals, with specific emphasis on catalyst design, electrolyte composition, mass diffusion, and adsorption energies key intermediate species. Furthermore, explores synergistic electrochemical co-electrolysis carbon source molecules, enabling synthesis a range valuable chemicals C─N bonds. It also provides in-depth insights into intricate reaction pathways underlying mechanisms, offering perspectives challenges prospects electrolysis. By advancing comprehension fostering awareness balance, this contributes development efficient sustainable systems from NO.

Язык: Английский

---

Cu–Fe Synergistic Active Sites Boost Kinetics of Electrochemical Nitrate Reduction

Advanced Functional Materials, Год журнала: 2024, Номер 34(21)

Опубликована: Янв. 31, 2024

Abstract Electrochemical conversion of nitrate offers an efficient solution to pollution and a sustainable strategy for ammonia generation. Cu Fe bimetallic electrocatalysts exhibit excellent electrochemical reduction (NO 3 RR) reactivity but the conventional preparation is complex time‐consuming this reaction still suffers from unsatisfied kinetic unidentified mechanisms. Herein, in situ electrodeposition employed induce modify active sites iron‐based N‐doping carbon nanofiber electrode (Fe/Fe C@NCNFs) during NO RR Cu‐contained solution. Benefiting synergistic effect between Cu─Fe/Fe C@NCNFs electrode, superior activity rate‐determining (*NO *NO 2 ) reduced energy barriers following deoxidation hydrogenation steps are achieved. Compared with Fe/Fe C@NCNFs‐500, pseudo‐first‐order (PFO) rate constant by demonstrates nearly two‐fold improvement high current efficiencies over wide pH voltage range. Furthermore, maximum ─N removal capacity N selectivity reach 15593.8 mg g −1 ca. 92% after twenty cycles. This work avenue highly design, paving more insights into interactions site construction performance.

Язык: Английский

---