Ball-milled sulfur-doped graphene materials contain metallic impurities originating from ball-milling apparatus: their influence on the catalytic properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43901916" target="_blank" >RIV/60461373:22310/16:43901916 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.rsc.org/-/content/articlehtml/2016/cp/c6cp03004a" target="_blank" >http://pubs.rsc.org/-/content/articlehtml/2016/cp/c6cp03004a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c6cp03004a" target="_blank" >10.1039/c6cp03004a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ball-milled sulfur-doped graphene materials contain metallic impurities originating from ball-milling apparatus: their influence on the catalytic properties

Popis výsledku v původním jazyce

Graphene materials have found applications in a wide range of devices over the past decade. In order to meet the demand for graphene materials, various synthesis methods are constantly being improved or invented. Ball-milling of graphite to obtain graphene materials is one of the many versatile methods to easily obtain buLk quantities. In this work, we show that the graphene materials produced by baLL-miLLing are spontaneously contaminated with metaLLic impurities originating from the grinding bowls and balls. Ball-milled sulfur-doped graphene materials obtained from two types of baLL-miLLing apparatus, specifically made up of stainLess steel and zirconium dioxide, were investigated. Zirconium dioxide based baLL-miLLed sulfur-doped graphene materials contain a drastically Lower amount of metaLLic impurities than stainLess steel-based baLL-miLLed sulfur-doped graphene materials. The presence of metaLLic impurities is demonstrated by their catalytic effects toward the electrochemical catalysis of hydrazine and cumene hydroperoxide. The general impression toward baLL-miLLing of graphite as a versatile method for the buLk production of 'metal-free' graphene materials without the need for post-processing and the selection of ball-milling took should be cautioned. These findings would have wide-reaching implications for graphene research.

Název v anglickém jazyce

Ball-milled sulfur-doped graphene materials contain metallic impurities originating from ball-milling apparatus: their influence on the catalytic properties

Popis výsledku anglicky

Graphene materials have found applications in a wide range of devices over the past decade. In order to meet the demand for graphene materials, various synthesis methods are constantly being improved or invented. Ball-milling of graphite to obtain graphene materials is one of the many versatile methods to easily obtain buLk quantities. In this work, we show that the graphene materials produced by baLL-miLLing are spontaneously contaminated with metaLLic impurities originating from the grinding bowls and balls. Ball-milled sulfur-doped graphene materials obtained from two types of baLL-miLLing apparatus, specifically made up of stainLess steel and zirconium dioxide, were investigated. Zirconium dioxide based baLL-miLLed sulfur-doped graphene materials contain a drastically Lower amount of metaLLic impurities than stainLess steel-based baLL-miLLed sulfur-doped graphene materials. The presence of metaLLic impurities is demonstrated by their catalytic effects toward the electrochemical catalysis of hydrazine and cumene hydroperoxide. The general impression toward baLL-miLLing of graphite as a versatile method for the buLk production of 'metal-free' graphene materials without the need for post-processing and the selection of ball-milling took should be cautioned. These findings would have wide-reaching implications for graphene research.

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/GA15-09001S" target="_blank" >GA15-09001S: Chemické modifikace materiálů na bázi grafenu: Syntéza grafanu a halogengrafenu</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

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

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Svazek periodika

18

Číslo periodika v rámci svazku

27

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

6

Strana od-do

17875-17880

Kód UT WoS článku

000379486200014

EID výsledku v databázi Scopus

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