Copper-Infused MXene from MAX Phase for Enhanced Electrochemical Ammonia Production

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0200651" target="_blank" >RIV/00216305:26620/26:0200651 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/62156489:43210/25:43927771 RIV/61989100:27240/25:10258937

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acsnano.5c09659?src=getftr&utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://pubs.acs.org/doi/10.1021/acsnano.5c09659?src=getftr&utm_source=clarivate&getft_integrator=clarivate</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsnano.5c09659" target="_blank" >10.1021/acsnano.5c09659</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Copper-Infused MXene from MAX Phase for Enhanced Electrochemical Ammonia Production

Popis výsledku v původním jazyce

The electrochemical conversion of nitrate to value-added ammonia is a green alternative to the energy-intensive Haber-Bosch process. However, due to inefficient catalysts, guiding the reaction route towards selective ammonia synthesis is still challenging. Here, we report a highly efficient Cu-infused V2C catalyst, synthesized via the molten salt synthesis method using selective CuCl2 etching. The optimized catalyst exhibits a faradaic efficiency of similar to 83% and an ammonia yield of 320 mu g cm-2 h-1 at -0.7 V vs RHE. We performed 15N isotopic labeling to ensure the purity and origin of ammonium ions. The synthesis approach was further applied to Ti3C2 MXene, which, upon Cu infusion, achieved a faradaic efficiency of similar to 70% and an improved ammonia yield of approximately 450 mu g cm-2 h-1 at -0.6 V vs RHE. Our results demonstrate that Cu-infused MXene catalysts achieve high selectivity, faradaic efficiency, and ammonia yield, highlighting the broad applicability of this method across different MXenes derived from various transition metals. Moreover, the Cu infusion approach can be expanded to incorporate other metals, offering versatile potential for developing MXene-based catalysts for a range of applications, from ammonia synthesis to CO2 reduction.

Název v anglickém jazyce

Copper-Infused MXene from MAX Phase for Enhanced Electrochemical Ammonia Production

Popis výsledku anglicky

The electrochemical conversion of nitrate to value-added ammonia is a green alternative to the energy-intensive Haber-Bosch process. However, due to inefficient catalysts, guiding the reaction route towards selective ammonia synthesis is still challenging. Here, we report a highly efficient Cu-infused V2C catalyst, synthesized via the molten salt synthesis method using selective CuCl2 etching. The optimized catalyst exhibits a faradaic efficiency of similar to 83% and an ammonia yield of 320 mu g cm-2 h-1 at -0.7 V vs RHE. We performed 15N isotopic labeling to ensure the purity and origin of ammonium ions. The synthesis approach was further applied to Ti3C2 MXene, which, upon Cu infusion, achieved a faradaic efficiency of similar to 70% and an improved ammonia yield of approximately 450 mu g cm-2 h-1 at -0.6 V vs RHE. Our results demonstrate that Cu-infused MXene catalysts achieve high selectivity, faradaic efficiency, and ammonia yield, highlighting the broad applicability of this method across different MXenes derived from various transition metals. Moreover, the Cu infusion approach can be expanded to incorporate other metals, offering versatile potential for developing MXene-based catalysts for a range of applications, from ammonia synthesis to CO2 reduction.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

21000 - Nano-technology

Projekt

<a href="/cs/project/TQ05000001" target="_blank" >TQ05000001: Pokrok v oblasti superkondenzátorů s navrhem využití Plasmy a multifunkčních hybridních materiálů</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

ACS Nano

ISSN

1936-0851

e-ISSN

1936-086X

Svazek periodika

19

Číslo periodika v rámci svazku

46

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

39645-39653

Kód UT WoS článku

001614165900001

EID výsledku v databázi Scopus

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