Metal-doping induced catalytic suitability of CoWO4@3D-printed electrode for nitrate reduction coupled glycerol oxidation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0201799" target="_blank" >RIV/00216305:26620/26:0201799 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0926337326002225?getft_integrator=clarivate&pes=vor&utm_source=clarivate" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0926337326002225?getft_integrator=clarivate&pes=vor&utm_source=clarivate</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcatb.2026.126602" target="_blank" >10.1016/j.apcatb.2026.126602</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Metal-doping induced catalytic suitability of CoWO4@3D-printed electrode for nitrate reduction coupled glycerol oxidation

Popis výsledku v původním jazyce

Multimetallic site engineering is emerging as a powerful strategy to regulate electronic structure and reaction pathways in complex multielectron electrocatalytic systems, such as electrocatalytic nitrate reduction. Here, we report the rational design of transition metal-doped CoWO4 (M-CoWO4, M = Cu, Fe, Ni) integrated into 3D-printed octet lattice electrodes for the electrochemical conversion of nitrate to ammonia (NO3--to-NH3) coupled glycerol oxidation (GOR). Systematic experiments, in situ Raman analysis and density functional theory calculations reveal that metal doping modulates the electronic environment around active sites through charge redistribution, thereby tuning intermediate adsorption and catalytic performance. Cu doping enhances NOx(-) adsorption and lowers the energy barrier for sequential protonation steps, accounting for the superior ammonia production rate (similar to 2 mmol cm(-2) h(-1)) and high Faradaic efficiency (95 %). By contrast, Fe doping preferentially enhances oxidative catalysis, including OER and GOR. In a full-cell configuration, GOR-coupled nitrate reduction decreases power consumption by similar to 22 % and boosts NH3 yield rate by 2.5-fold relative to the conventional NITRR||OER system. This study reveals that strategic metal doping in CoWO4 tunes its electronic structure to promote energy-efficient NO3--to-NH3 conversion coupled with glycerol oxidation, offering a sustainable pathway toward green ammonia production.

Název v anglickém jazyce

Metal-doping induced catalytic suitability of CoWO4@3D-printed electrode for nitrate reduction coupled glycerol oxidation

Popis výsledku anglicky

Multimetallic site engineering is emerging as a powerful strategy to regulate electronic structure and reaction pathways in complex multielectron electrocatalytic systems, such as electrocatalytic nitrate reduction. Here, we report the rational design of transition metal-doped CoWO4 (M-CoWO4, M = Cu, Fe, Ni) integrated into 3D-printed octet lattice electrodes for the electrochemical conversion of nitrate to ammonia (NO3--to-NH3) coupled glycerol oxidation (GOR). Systematic experiments, in situ Raman analysis and density functional theory calculations reveal that metal doping modulates the electronic environment around active sites through charge redistribution, thereby tuning intermediate adsorption and catalytic performance. Cu doping enhances NOx(-) adsorption and lowers the energy barrier for sequential protonation steps, accounting for the superior ammonia production rate (similar to 2 mmol cm(-2) h(-1)) and high Faradaic efficiency (95 %). By contrast, Fe doping preferentially enhances oxidative catalysis, including OER and GOR. In a full-cell configuration, GOR-coupled nitrate reduction decreases power consumption by similar to 22 % and boosts NH3 yield rate by 2.5-fold relative to the conventional NITRR||OER system. This study reveals that strategic metal doping in CoWO4 tunes its electronic structure to promote energy-efficient NO3--to-NH3 conversion coupled with glycerol oxidation, offering a sustainable pathway toward green ammonia production.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

21000 - Nano-technology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2026

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied catalysis. B, Environmental

ISSN

0926-3373

e-ISSN

1873-3883

Svazek periodika

391

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

001722418300001

EID výsledku v databázi Scopus

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