Electrochemical nitrate reduction to ammonia using laser-processed Nb₂AlC: the role of effective Al etching

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0198216" target="_blank" >RIV/00216305:26620/26:0198216 - isvavai.cz</a>

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2025/ta/d5ta02418h" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2025/ta/d5ta02418h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d5ta02418h" target="_blank" >10.1039/d5ta02418h</a>

Result language

angličtina

Original language name

Electrochemical nitrate reduction to ammonia using laser-processed Nb₂AlC: the role of effective Al etching

Original language description

Electrocatalytic nitrate reduction reaction to ammonia (NH3) is a promising approach for generating NH3 compared with the widely used Haber-Bosch process. It offers the advantage of zero carbon emission and helps in recycling nitrate waste. However, the challenge remains in the synthesis and engineering of proficient electrocatalytic materials with high faradaic efficiency and yield rate. Herein, we report a unique laser-processed niobium oxide-graphene (NbOx-Gr) electrode attached to a conductive support of graphene for NH3 generation. The two-step fabrication process started with spatially and temporally controlled pulsed laser writing on an Nb2AlC-coated polymer surface followed by simple electrochemical etching to remove excess Al. Electrochemical analysis elucidated that the NbOx-Gr electrode exhibited improved activity for ammonia generation. Moreover, theoretical studies provide insights into the nitrate reduction reaction mechanism, confirming that the electrochemical active site was located on the Nb atom of the NbOx-Gr electrode. Laser processing is a cost-effective, less chemically hazardous, versatile, and efficient approach to utilize MAX phases for multiple energy storage and conversion applications.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

21001 - Nano-materials (production and properties)

Project

—

Continuities

O - Projekt operacniho programu

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

2050-7496

Volume of the periodical

13

Issue of the periodical within the volume

26

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

21063-21076

UT code for WoS article

001503957100001

EID of the result in the Scopus database

2-s2.0-105007951029