Synthesis of Magnesium Phosphorous Trichalcogenides and Applications in Photoelectrochemical Water Splitting

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924170" target="_blank" >RIV/60461373:22310/22:43924170 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/smll.202200355" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/smll.202200355</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/smll.202200355" target="_blank" >10.1002/smll.202200355</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis of Magnesium Phosphorous Trichalcogenides and Applications in Photoelectrochemical Water Splitting

Popis výsledku v původním jazyce

Promising applications of metal phosphorous trichalcogenides (M2P2X6 or MPX3) have been predicted in optoelectronics, photoelectrocatalysis, and water-splitting reactions, mainly due to its wide bandgap. Transition metals are widely used in the synthesis of MPX3, however, divalent cations of alkaline earth metals can also be constituents in MPX3 2D layered structures. Herein, MgPX3 (X = S, Se) are synthesized and their photoelectrochemical (PEC) activity is tested in the hydrogen evolution and oxygen evolution reaction (OER) regions under a wide range of wavelengths. MgPSe3 photoelectrode shows the best PEC performance with a response of 1.6 +/- 0.1 mA cm(-2) under 420 nm. In the light-assisted OER, a 200 mV improvement is obtained in the overpotential at 10 mA cm(-2) for MgPSe3. The better performance of MgPSe3 is consistent with its lower optical bandgap (E-g = 3.15 eV), as a result of the variation of electronegativity between selenide and sulfide.

Název v anglickém jazyce

Synthesis of Magnesium Phosphorous Trichalcogenides and Applications in Photoelectrochemical Water Splitting

Popis výsledku anglicky

Promising applications of metal phosphorous trichalcogenides (M2P2X6 or MPX3) have been predicted in optoelectronics, photoelectrocatalysis, and water-splitting reactions, mainly due to its wide bandgap. Transition metals are widely used in the synthesis of MPX3, however, divalent cations of alkaline earth metals can also be constituents in MPX3 2D layered structures. Herein, MgPX3 (X = S, Se) are synthesized and their photoelectrochemical (PEC) activity is tested in the hydrogen evolution and oxygen evolution reaction (OER) regions under a wide range of wavelengths. MgPSe3 photoelectrode shows the best PEC performance with a response of 1.6 +/- 0.1 mA cm(-2) under 420 nm. In the light-assisted OER, a 200 mV improvement is obtained in the overpotential at 10 mA cm(-2) for MgPSe3. The better performance of MgPSe3 is consistent with its lower optical bandgap (E-g = 3.15 eV), as a result of the variation of electronegativity between selenide and sulfide.

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

<a href="/cs/project/GJ20-21523Y" target="_blank" >GJ20-21523Y: 2D Trichalkogenfosfáty přechodných kovů pro uchovávání a přeměnu energie</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

Small

ISSN

1613-6810

e-ISSN

1613-6829

Svazek periodika

18

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

nestrankovano

Kód UT WoS článku

000777534000001

EID výsledku v databázi Scopus

2-s2.0-85127453217