Articles with "ammonia oxidation" as a keyword



Creating Moderate Local Reaction Environment on Nanoporous Cu2O for Electrocatalytic Ammonia Oxidation to Nitrite and Nitrate

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Published in 2025 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202508286

Abstract: Electrochemical ammonia oxidation reaction (AOR) presents a promising strategy for sustainable nitrite and nitrate (NOx−) production. Conventional noble metal‐based AOR catalysts often yield undesired dinitrogen and suffer from AOR intermediates poisoning. Herein, nanoporous Cu2O (np–Cu2O)… read more here.

Keywords: reaction; cu2o; nitrite nitrate; nanoporous cu2o ... See more keywords

How Ir–Rh Alloys Improve Electrochemical Ammonia Oxidation Activity Studied by Density Functional Theory

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Published in 2024 at "ChemCatChem"

DOI: 10.1002/cctc.202401177

Abstract: The electrochemical ammonia oxidation reaction (AOR) has applications in hydrogen storage and ammonia waste remediation. Using density functional theory, we investigate the mechanism of AOR on Ir, Rh, and their alloys at varied atomic ratios… read more here.

Keywords: electrochemical ammonia; text; ammonia oxidation; ammonia ... See more keywords

Incorporation of 13C-HCO3− by ammonia-oxidizing archaea and bacteria during ammonia oxidation of sludge from a municipal wastewater treatment plant

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Published in 2018 at "Applied Microbiology and Biotechnology"

DOI: 10.1007/s00253-018-9436-0

Abstract: Ammonia-oxidizing archaea (AOA) have recently been proposed as potential players for ammonia removal in wastewater treatment plants (WWTPs). However, there is little evidence directly showing the contribution of AOA to ammonia oxidation in these engineered… read more here.

Keywords: oxidizing archaea; ammonia; sludge; ammonia oxidation ... See more keywords
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Response of ammonia oxidation activities to water-level fluctuations in riparian zones in a column experiment.

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Published in 2020 at "Chemosphere"

DOI: 10.1016/j.chemosphere.2020.128702

Abstract: Biogeochemical hotspots of nitrogen cycling such as ammonia oxidation commonly occur in riparian ecosystems. However, the responses of ammonia-oxidizing archaea (AOA) and bacteria (AOB) to water-level fluctuations (WLF) in riparian zones remain unclear. In this… read more here.

Keywords: level; level fluctuations; water level; column experiment ... See more keywords
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Characterization of the synergistic relationships between nitrification and microbial regrowth in the chloraminated drinking water supply system.

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Published in 2021 at "Environmental research"

DOI: 10.1016/j.envres.2021.111252

Abstract: Deterioration of water quality is commonly found in secondary water supply systems (SWSSs), especially the growth of microbes. To explore the metabolic mechanism for rapid microbial regrowth in SWSSs, a regrowth potential assessment, flow cytometry,… read more here.

Keywords: water supply; water; regrowth; microbial regrowth ... See more keywords

Quantitative evaluation of inhibitory effect of various substances on anaerobic ammonia oxidation (anammox).

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Published in 2017 at "Journal of bioscience and bioengineering"

DOI: 10.1016/j.jbiosc.2017.04.010

Abstract: The inhibitory effect of 20 substances of various chemical species on the anaerobic ammonia oxidation (anammox) activity of an enrichment culture, predominated by Candidatus Brocadia, was determined systematically by using a 15N tracer technique. The… read more here.

Keywords: anaerobic ammonia; effect; inhibitory effect; oxidation anammox ... See more keywords

Hyperbranched concave octahedron of PtIrCu nanocrystals with high-index facets for efficiently electrochemical ammonia oxidation reaction.

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Published in 2021 at "Journal of colloid and interface science"

DOI: 10.1016/j.jcis.2021.04.068

Abstract: Ammonia oxidation reaction (AOR) via electrocatalysis is one of the most efficient ways of utilizing ammonia (a zero-carbon fuel with high hydrogen content) for renewable energy systems. However, AOR seriously suffers from the slow kinetics,… read more here.

Keywords: ptircu; reaction; ammonia oxidation; high index ... See more keywords
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Manganese oxides in Phragmites rhizosphere accelerates ammonia oxidation in constructed wetlands.

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Published in 2021 at "Water research"

DOI: 10.1016/j.watres.2021.117688

Abstract: Phragmites reeds are widely used in constructed wetlands (CWs) for treating wastewater. The enrichment of microorganisms and Fe/Mn plaque in Phragmites rhizospheres largely contributes to pollutant removal. However, their interactions and potential synergistic roles in… read more here.

Keywords: phragmites rhizosphere; oxidation; manganese oxides; constructed wetlands ... See more keywords

Operando Stability of Platinum Electrocatalysts in Ammonia Oxidation Reactions

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Published in 2020 at "ACS Catalysis"

DOI: 10.1021/acscatal.0c02413

Abstract: Ammonia has recently received considerable attention as an alternative energy carrier and a carbon-neutral fuel. In this future energy scenario, the ammonia oxidation reaction (AOR) is a pivotal pr... read more here.

Keywords: ammonia oxidation; electrocatalysts ammonia; stability platinum; oxidation ... See more keywords

Heterogeneous Electrochemical Ammonia Oxidation with a Ru-bda Oligomer Anchored on Graphitic Electrodes via CH−π Interactions

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Published in 2022 at "ACS Energy Letters"

DOI: 10.1021/acsenergylett.2c02483

Abstract: Molecular catalysts can promote ammonia oxidation, providing mechanistic insights into the electrochemical N2 cycle for a carbon-free fuel economy. We report the ammonia oxidation activity of carbon anodes functionalized with the oligomer {[RuII(bda-κ-N2O2)(4,4′-bpy)]10(4,4′-bpy)}, Rubda-10, where… read more here.

Keywords: oxidation; electrochemical ammonia; heterogeneous electrochemical; ammonia oxidation ... See more keywords

Electrocatalytic Ammonia Oxidation by a Low-Coordinate Copper Complex.

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Published in 2022 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.2c07977

Abstract: Molecular catalysts for ammonia oxidation to dinitrogen represent enabling components to utilize ammonia as a fuel and/or source of hydrogen. Ammonia oxidation requires not only the breaking of multiple strong N-H bonds but also controlled… read more here.

Keywords: oxidation; copper; cui; coordinate ... See more keywords