Valence and oxide impurities in MoS2 and WS2 dramatically change their electrocatalytic activity towards proton reduction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43901913" target="_blank" >RIV/60461373:22310/16:43901913 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.rsc.org/-/content/articlehtml/2016/nr/c6nr03086f" target="_blank" >http://pubs.rsc.org/-/content/articlehtml/2016/nr/c6nr03086f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c6nr03086f" target="_blank" >10.1039/c6nr03086f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Valence and oxide impurities in MoS2 and WS2 dramatically change their electrocatalytic activity towards proton reduction

Popis výsledku v původním jazyce

Layered molybdenum disulfide (MoS2) and tungsten disulfide (WS2) have received renewed interest in recent years as they are catalytic towards the hydrogen evolution reaction (HER) and they are touted as future replacements of platinum in electrolyzers. There is a significant discrepancy in the found onset potentials of MoS2 and WS2 towards the hydrogen evolution reaction. Here we show that the presence of valence sulfide impurities, such as MoS3 and WS3, and their oxide counterparts, such as MoO2, MoO3 and WO2, WO3 can contribute to the catalytic activity towards hydronium reduction to hydrogen of MoS2 and WS2. Therefore, it is highly possible that the differences in the reported onset potentials and thus catalytic activities of the MoS2 and WS2 are due to the presence of catalytic impurities.

Název v anglickém jazyce

Valence and oxide impurities in MoS2 and WS2 dramatically change their electrocatalytic activity towards proton reduction

Popis výsledku anglicky

Layered molybdenum disulfide (MoS2) and tungsten disulfide (WS2) have received renewed interest in recent years as they are catalytic towards the hydrogen evolution reaction (HER) and they are touted as future replacements of platinum in electrolyzers. There is a significant discrepancy in the found onset potentials of MoS2 and WS2 towards the hydrogen evolution reaction. Here we show that the presence of valence sulfide impurities, such as MoS3 and WS3, and their oxide counterparts, such as MoO2, MoO3 and WO2, WO3 can contribute to the catalytic activity towards hydronium reduction to hydrogen of MoS2 and WS2. Therefore, it is highly possible that the differences in the reported onset potentials and thus catalytic activities of the MoS2 and WS2 are due to the presence of catalytic impurities.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA16-05167S" target="_blank" >GA16-05167S: Použití iontových svazků pro modifikace struktur založených na grafenu</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Nanoscale

ISSN

2040-3364

e-ISSN

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Svazek periodika

8

Číslo periodika v rámci svazku

37

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

16752-16760

Kód UT WoS článku

000387857700021

EID výsledku v databázi Scopus

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