Dealloying layered PdBi2 nanoflakes to palladium hydride leads to enhanced electrocatalytic N-2 reduction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924106" target="_blank" >RIV/60461373:22310/22:43924106 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlehtml/2022/ta/d1ta07395h" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2022/ta/d1ta07395h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d1ta07395h" target="_blank" >10.1039/d1ta07395h</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dealloying layered PdBi2 nanoflakes to palladium hydride leads to enhanced electrocatalytic N-2 reduction

Popis výsledku v původním jazyce

Electrochemical catalysis of nitrogen to ammonia is an environmentally friendly alternative strategy to the traditional and damaging Haber-Bosch process. Nevertheless, it is Limited by a Low ammonia yield and faradaic efficiency due to (i) the complexity associated with the breaking of the N N bond and (ii) the competing hydrogen evolution reaction. Herein, we report that the electrochemical dealloying of exfoliated PdBi2 nanoflakes into palladium hydride greatly enhances the electrocatalytic nitrogen reduction reaction. The electrochemical decomposition of bismuth atoms creates vacancies in the PdBi2 crystal lattice enabling hydrogen atoms to be absorbed and instigating the initial protonation of N-2 molecules necessary for the eventual NH3 formation. The average ammonia yield and faradaic efficiency were 30.06 +/- 1.16 mu g cm(-2)h(-1) and 15.25 +/- 1.29% when the potentiaL was held at -1.5 V vs. sat. Ag/AgCl after 6 h at room temperature. Our conclusions are supported by the first-principles simulations and this work emphasizes the potential implementation of palladium compounds for future N-2 reduction reaction electrocatalysts.

Název v anglickém jazyce

Dealloying layered PdBi2 nanoflakes to palladium hydride leads to enhanced electrocatalytic N-2 reduction

Popis výsledku anglicky

Electrochemical catalysis of nitrogen to ammonia is an environmentally friendly alternative strategy to the traditional and damaging Haber-Bosch process. Nevertheless, it is Limited by a Low ammonia yield and faradaic efficiency due to (i) the complexity associated with the breaking of the N N bond and (ii) the competing hydrogen evolution reaction. Herein, we report that the electrochemical dealloying of exfoliated PdBi2 nanoflakes into palladium hydride greatly enhances the electrocatalytic nitrogen reduction reaction. The electrochemical decomposition of bismuth atoms creates vacancies in the PdBi2 crystal lattice enabling hydrogen atoms to be absorbed and instigating the initial protonation of N-2 molecules necessary for the eventual NH3 formation. The average ammonia yield and faradaic efficiency were 30.06 +/- 1.16 mu g cm(-2)h(-1) and 15.25 +/- 1.29% when the potentiaL was held at -1.5 V vs. sat. Ag/AgCl after 6 h at room temperature. Our conclusions are supported by the first-principles simulations and this work emphasizes the potential implementation of palladium compounds for future N-2 reduction reaction electrocatalysts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/GX19-26910X" target="_blank" >GX19-26910X: Chemie ve dvou dimenzích - za hranice grafenu</a><br>

Návaznosti

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

Rok uplatnění

2022

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

10

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

11904-11916

Kód UT WoS článku

000751671000001

EID výsledku v databázi Scopus

2-s2.0-85133129318