Repozitorij Univerze v Novi Gorici

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Naslov:Highly active iron phosphide catalysts for selective electrochemical nitrate reduction to ammonia
Avtorji:ID Chouki, Takwa (Avtor)
ID Machreki, Manel (Avtor)
ID Rutkowska, Iwona A. (Avtor)
ID Rytelewska, Beata (Avtor)
ID Kulesza, Pawel Jozef (Avtor)
ID Tyuliev, Georgi (Avtor)
ID Harb, Moussab (Avtor)
ID Azofra, Luis Miguel (Avtor)
ID Emin, Saim (Avtor)
Datoteke:.pdf RAZ_Chouki_Takwa_i2023.pdf (7,95 MB)
MD5: 619C2A026ADD32419D380440031BA0D4
 
URL https://www.sciencedirect.com/science/article/pii/S2213343723000143
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:The electrochemical reduction reaction of the nitrate ion (NO3−), a widespread water pollutant, to valuable ammonia (NH3) is a promising approach for environmental remediation and green energy conservation. The development of high-performance electrocatalysts to selectively reduce NO3− wastes into value-added NH3 will open up a different route of NO3− treatment, and impose both environmental and economic impacts on sustainable NH3 synthesis. Transition metal phosphides represent one of the most promising earth-abundant catalysts with impressive electrocatalytic activities. Herein, we report for the first time the electrocatalytic reduction of NO3− using different phases of iron phosphide. Particularly, FeP and Fe2P phases were successfully demonstrated as efficient catalysts for NH3 generation. Detection of the in-situ formed product was achieved using electrooxidation of NH3 to nitrogen (N2) on a Pt electrode. The Fe2P catalyst exhibits the highest Faradaic efficiency (96 %) for NH3 generation with a yield (0.25 mmol h−1 cm-−2 or 2.10 mg h−1 cm−2) at − 0.55 V vs. reversible hydrogen electrode (RHE). The recycling tests confirmed that Fe2P and FeP catalysts exhibit excellent stability during the NO3− reduction at − 0.37 V vs. RHE. To get relevant information about the reaction mechanisms and the fundamental origins behind the better performance of Fe2P, density functional theory (DFT) calculations were performed. These results indicate that the Fe2P phase exhibits excellent performance to be deployed as an efficient noble metal-free catalyst for NH3 generation.
Ključne besede:iron phosphide, electrocatalysts, nitrates reduction ammonia, DFT calculations
Status publikacije:Objavljeno
Verzija publikacije:Objavljena publikacija
Datum objave:01.04.2023
Leto izida:2023
Št. strani:str. 1-11
Številčenje:Vol. 11, no. 2, [article no.] 109275
PID:20.500.12556/RUNG-7905-535deab0-b5c9-2751-fbbe-5114adef8f7c Novo okno
COBISS.SI-ID:140447235 Novo okno
UDK:54
ISSN pri članku:2213-3437
DOI:10.1016/j.jece.2023.109275 Novo okno
NUK URN:URN:SI:UNG:REP:BRFWNGNK
Datum objave v RUNG:02.02.2023
Število ogledov:1366
Število prenosov:4
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Journal of environmental chemical engineering
Založnik:Elsevier B.V.
ISSN:2213-3437
COBISS.SI-ID:519695385 Novo okno

Gradivo je financirano iz projekta

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:N2-0221
Naslov:Večnamenski elektrokatalizatorji za čisto energijsko pretvorbo

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:02.02.2023

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