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Reaction pathways o...
Reaction pathways on N-substituted carbon catalysts during the electrochemical reduction of nitrate to ammonia
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- Chen, Zheng (författare)
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany
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- Chen, Jianhong (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Department of Materials and Environmental Chemistry, Stockholm University, 10691 Stockholm, Sweden
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- Barcaro, Giovanni (författare)
- CNR-ICCOM−Institute of Chemistry of Organometallic Compounds, 56124 Pisa, Italy
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- Budnyak, Tetyana (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Department of Materials and Environmental Chemistry, Stockholm University, 10691 Stockholm, Sweden
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- Rokicińska, Anna (författare)
- Faculty of Chemistry, Jagiellonian University, ul. Golebia 24, 30-387 Krakow, Poland
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- Dronskowski, Richard (författare)
- Institute of Inorganic Chemistry, RWTH Aachen University, 52056 Aachen, Germany;Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, 7098 Liuxian Blvd, Shenzhen, China
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- Budnyk, Serhiy (författare)
- AC2T research GmbH, Viktor-Kaplan-Str. 2c, 2700 Wiener Neustadt, Austria
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- Kuśtrowski, Piotr (författare)
- Faculty of Chemistry, Jagiellonian University, ul. Golebia 24, 30-387 Krakow, Poland
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- Monti, Susanna (författare)
- CNR-ICCOM−Institute of Chemistry of Organometallic Compounds, 56124 Pisa, Italy
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- Slabon, Adam (författare)
- Inorganic Chemistry, University of Wuppertal, Gaußstr. 20, 42119 Wuppertal, Germany
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(creator_code:org_t)
- 2022
- 2022
- Engelska.
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Ingår i: Catalysis Science & Technology. - : Royal Society of Chemistry. - 2044-4753 .- 2044-4761. ; 12:11, s. 3582-3593
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Abstract
Ämnesord
Stäng
- Electrochemical reduction of nitrate into ammonia is one potential strategy to valorize pollutants needed to close the nitrogen cycle. The understanding of carbonaceous materials as metal-free representatives of electrocatalysts is of high importance to ensure sufficient activity and target selectivity. We report on the role of defects in cellulose-derived nitrogen-doped carbon (NDC) materials, produced by ammonolysis at different temperatures, to obtain efficient electrocatalysts for the nitrate reduction reaction (NO3RR). Carbon catalyst ammonolysis at 800 °C (NDC-800) yields the highest electrochemical performance, exhibiting 73.1% NH4+ selectivity and nearly 100% NO3− reduction efficiency with a prolonged NO3RR time (48 h) at −1.5 V vs. Ag/AgCl in a 0.1 M Na2SO4 electrolyte. We provide support to our findings by undertaking complementary structural analyses with scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, low-temperature N2 adsorption, and theoretical studies based on multi-scale/level calculations. Atomistic molecular dynamics simulations based on a reactive force field combined with quantum chemistry (QC) calculations on representative model systems suggest possible realistic scenarios of the material structure and reaction mechanisms of the NO3− reduction routes.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- Engineering Science with specialization in Nanotechnology and Functional Materials
- Teknisk fysik med inriktning mot nanoteknologi och funktionella material
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Chen, Zheng
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Chen, Jianhong
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Barcaro, Giovann ...
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Budnyak, Tetyana
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Rokicińska, Anna
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Dronskowski, Ric ...
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visa fler...
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Budnyk, Serhiy
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Kuśtrowski, Piot ...
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Monti, Susanna
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Slabon, Adam
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visa färre...
- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Nanoteknik
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
- Artiklar i publikationen
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Catalysis Scienc ...
- Av lärosätet
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Uppsala universitet
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Stockholms universitet