Atomic tuning of 3D printed carbon surface chemistry for electrocatalytic nitrite oxidation and reduction to ammonia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F24%3APU155893" target="_blank" >RIV/00216305:26620/24:PU155893 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27240/24:10256090

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2024/ta/d4ta06800a" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/ta/d4ta06800a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4ta06800a" target="_blank" >10.1039/d4ta06800a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Atomic tuning of 3D printed carbon surface chemistry for electrocatalytic nitrite oxidation and reduction to ammonia

Popis výsledku v původním jazyce

Nitrite contamination in agricultural and industrial wastewater presents a critical impact on environmental sustainability, demanding efficient strategies for monitoring and remediation. This study addresses this challenge by developing cost-effective electrocatalysts for both nitrite detection and conversion to value-added ammonia. 3D printed carbon materials are explored as bifunctional platforms for the electrochemical nitrite oxidation reaction (NO2OR) and nitrite reduction reaction (NO2RR). Benefiting from the inherent Ti-dominated metallic impurities and intrinsic surface features of carbon nanotubes, 3D printed carbon electrodes exhibit electrocatalytic activity for both reactions. To enhance this activity, we further introduce an effective fabrication methodology that combines 3D printing of carbon substrates with precise surface modification using atomic layer deposition (ALD) of TiO2. The resulting TiO2-coated carbon electrode demonstrates significantly improved electrocatalytic properties. For NO2OR, it exhibits a peak current density of 0.75 mA cm-2 at 1.53 V vs. RHE, while for NO2RR, it achieves a yield rate of 630.5 mu g h-1 cm-2 with a faradaic efficiency of 81.9% at -1.06 V vs. RHE. This enhancement in electrocatalytic activity is primarily attributed to the formation of abundant interfaces between the conductive carbon and ALD-coated TiO2. The developed methodology not only enables precise modification of 3D printed carbon surface chemistry but also presents a scalable method for electrocatalyst production.

Název v anglickém jazyce

Atomic tuning of 3D printed carbon surface chemistry for electrocatalytic nitrite oxidation and reduction to ammonia

Popis výsledku anglicky

Nitrite contamination in agricultural and industrial wastewater presents a critical impact on environmental sustainability, demanding efficient strategies for monitoring and remediation. This study addresses this challenge by developing cost-effective electrocatalysts for both nitrite detection and conversion to value-added ammonia. 3D printed carbon materials are explored as bifunctional platforms for the electrochemical nitrite oxidation reaction (NO2OR) and nitrite reduction reaction (NO2RR). Benefiting from the inherent Ti-dominated metallic impurities and intrinsic surface features of carbon nanotubes, 3D printed carbon electrodes exhibit electrocatalytic activity for both reactions. To enhance this activity, we further introduce an effective fabrication methodology that combines 3D printing of carbon substrates with precise surface modification using atomic layer deposition (ALD) of TiO2. The resulting TiO2-coated carbon electrode demonstrates significantly improved electrocatalytic properties. For NO2OR, it exhibits a peak current density of 0.75 mA cm-2 at 1.53 V vs. RHE, while for NO2RR, it achieves a yield rate of 630.5 mu g h-1 cm-2 with a faradaic efficiency of 81.9% at -1.06 V vs. RHE. This enhancement in electrocatalytic activity is primarily attributed to the formation of abundant interfaces between the conductive carbon and ALD-coated TiO2. The developed methodology not only enables precise modification of 3D printed carbon surface chemistry but also presents a scalable method for electrocatalyst production.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

2050-7496

Svazek periodika

12

Číslo periodika v rámci svazku

46

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

32458-32470

Kód UT WoS článku

001351456000001

EID výsledku v databázi Scopus

2-s2.0-85208915759