Hydrogen evolution reaction at different pH of 2D MoS2 prepared via liquid-phase exfoliation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F25%3A43899072" target="_blank" >RIV/44555601:13440/25:43899072 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/25:43931837

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2468023025003463?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2468023025003463?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfin.2025.106086" target="_blank" >10.1016/j.surfin.2025.106086</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrogen evolution reaction at different pH of 2D MoS2 prepared via liquid-phase exfoliation

Popis výsledku v původním jazyce

This study reports the successful preparation of exfoliated MoS2 structures from the bulk powder using liquidphase exfoliation (LPE), leading to a significant improvement in electrochemical properties for the hydrogen evolution reaction (HER) without modification of the flakes. Utilizing green solvent systems, acetone/water and butanol/ethanol, the study highlights the importance of solvent selection and optimization for achieving efficient exfoliation and catalytic performance. The acetone/water system, with an optimal ratio of 45/55, produced uniform 2D MoS2 flakes with enhanced catalytic performance, especially in acidic media, where the samples exhibited high current densities and efficient charge transfer. After 2000 HER cycles, this system achieved an overpotential of 365 mV at -10 mA &amp; sdot;cm-2, demonstrating both performance and stability improvements. Although less efficient overall, the butanol/ethanol system showed promising results in alkaline conditions with best ratio of 30/70. These findings confirm the importance of solvent selection in MoS2 exfoliation and highlight the potential of this material as a catalyst for hydrogen production. Further optimization of solvent ratios could enhance the catalytic efficiency of MoS2 for energy applications and scalability for industrial applications.

Název v anglickém jazyce

Hydrogen evolution reaction at different pH of 2D MoS2 prepared via liquid-phase exfoliation

Popis výsledku anglicky

This study reports the successful preparation of exfoliated MoS2 structures from the bulk powder using liquidphase exfoliation (LPE), leading to a significant improvement in electrochemical properties for the hydrogen evolution reaction (HER) without modification of the flakes. Utilizing green solvent systems, acetone/water and butanol/ethanol, the study highlights the importance of solvent selection and optimization for achieving efficient exfoliation and catalytic performance. The acetone/water system, with an optimal ratio of 45/55, produced uniform 2D MoS2 flakes with enhanced catalytic performance, especially in acidic media, where the samples exhibited high current densities and efficient charge transfer. After 2000 HER cycles, this system achieved an overpotential of 365 mV at -10 mA &amp; sdot;cm-2, demonstrating both performance and stability improvements. Although less efficient overall, the butanol/ethanol system showed promising results in alkaline conditions with best ratio of 30/70. These findings confirm the importance of solvent selection in MoS2 exfoliation and highlight the potential of this material as a catalyst for hydrogen production. Further optimization of solvent ratios could enhance the catalytic efficiency of MoS2 for energy applications and scalability for industrial applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Surfaces and Interfaces

ISSN

2468-0230

e-ISSN

—

Svazek periodika

2025

Číslo periodika v rámci svazku

61

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

001437908200001

EID výsledku v databázi Scopus

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