Laser-Induced Pd-PdO/rGO Catalysts for Enhanced Electrocatalytic Conversion of Nitrate into Ammonia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F24%3A43972855" target="_blank" >RIV/49777513:23640/24:43972855 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1021/acsami.4c06378" target="_blank" >https://doi.org/10.1021/acsami.4c06378</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsami.4c06378" target="_blank" >10.1021/acsami.4c06378</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Laser-Induced Pd-PdO/rGO Catalysts for Enhanced Electrocatalytic Conversion of Nitrate into Ammonia

Popis výsledku v původním jazyce

Electrochemical reduction of nitrate to ammonia (eNO(3)RR) is proposed as a sustainable solution for high-rate ammonia synthesis under ambient conditions. The complex, multistep eNO(3)RR mechanism necessitates the use of a catalyst for the complete conversion of nitrate to ammonia. Our research focuses on developing a novel Pd-PdO doped in a reduced graphene oxide (rGO) composite catalyst synthesized via a laser-assisted one-step technique. This catalyst demonstrates dual functionality: palladium (Pd) boosts hydrogen adsorption, while its oxide (PdO) demonstrates considerable nitrogen adsorption affinity and exhibits a maximum ammonia yield of 5456.4 +/- 453.4 mu g/h/cm(2) at -0.6 V vs reversible hydrogen electrode (RHE), with significant yields for nitrite and hydroxylamine under ambient conditions in a nitrate-containing alkaline electrolyte. At a lower potential of -0.1 V, the catalyst exhibited a minimal hydrogen evolution reaction of 3.1 +/- 2.2% while achieving high ammonia selectivity (74.9 +/- 4.4%), with the balance for nitrite and hydroxylamine. Additionally, the catalyst&apos;s stability and activity can be regenerated through the electrooxidation of Pd.

Název v anglickém jazyce

Laser-Induced Pd-PdO/rGO Catalysts for Enhanced Electrocatalytic Conversion of Nitrate into Ammonia

Popis výsledku anglicky

Electrochemical reduction of nitrate to ammonia (eNO(3)RR) is proposed as a sustainable solution for high-rate ammonia synthesis under ambient conditions. The complex, multistep eNO(3)RR mechanism necessitates the use of a catalyst for the complete conversion of nitrate to ammonia. Our research focuses on developing a novel Pd-PdO doped in a reduced graphene oxide (rGO) composite catalyst synthesized via a laser-assisted one-step technique. This catalyst demonstrates dual functionality: palladium (Pd) boosts hydrogen adsorption, while its oxide (PdO) demonstrates considerable nitrogen adsorption affinity and exhibits a maximum ammonia yield of 5456.4 +/- 453.4 mu g/h/cm(2) at -0.6 V vs reversible hydrogen electrode (RHE), with significant yields for nitrite and hydroxylamine under ambient conditions in a nitrate-containing alkaline electrolyte. At a lower potential of -0.1 V, the catalyst exhibited a minimal hydrogen evolution reaction of 3.1 +/- 2.2% while achieving high ammonia selectivity (74.9 +/- 4.4%), with the balance for nitrite and hydroxylamine. Additionally, the catalyst&apos;s stability and activity can be regenerated through the electrooxidation of Pd.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

ACS Applied Materials and Interfaces

ISSN

1944-8244

e-ISSN

1944-8252

Svazek periodika

16

Číslo periodika v rámci svazku

28

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

36433-36443

Kód UT WoS článku

001265522800001

EID výsledku v databázi Scopus

2-s2.0-85199084292