Chemically reduced graphene contains inherent metallic impurities present in parent natural and synthetic graphite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F12%3A43893557" target="_blank" >RIV/60461373:22310/12:43893557 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1073/pnas.1205388109" target="_blank" >http://dx.doi.org/10.1073/pnas.1205388109</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1073/pnas.1205388109" target="_blank" >10.1073/pnas.1205388109</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Chemically reduced graphene contains inherent metallic impurities present in parent natural and synthetic graphite

Popis výsledku v původním jazyce

Graphene-related materials are in the forefront of nanomaterial research. One of the most common ways to prepare graphenes is to oxidize graphite (natural or synthetic) to graphite oxide and exfoliate it to graphene oxide with consequent chemical reduction to chemically reduced graphene. Here, we show that both natural and synthetic graphite contain a large amount of metallic impurities that persist in the samples of graphite oxide after the oxidative treatment, and chemically reduced graphene after thechemical reduction. We demonstrate that, despite a substantial elimination during the oxidative treatment of graphite samples, a significant amount of impurities associated to the chemically reduced graphene materials still remain and alter their electrochemical properties dramatically. We propose a method for the purification of graphenes based on thermal treatment at 1,000 degrees C in chlorine atmosphere to reduce the effect of such impurities on the electrochemical properties. Our f

Název v anglickém jazyce

Chemically reduced graphene contains inherent metallic impurities present in parent natural and synthetic graphite

Popis výsledku anglicky

Graphene-related materials are in the forefront of nanomaterial research. One of the most common ways to prepare graphenes is to oxidize graphite (natural or synthetic) to graphite oxide and exfoliate it to graphene oxide with consequent chemical reduction to chemically reduced graphene. Here, we show that both natural and synthetic graphite contain a large amount of metallic impurities that persist in the samples of graphite oxide after the oxidative treatment, and chemically reduced graphene after thechemical reduction. We demonstrate that, despite a substantial elimination during the oxidative treatment of graphite samples, a significant amount of impurities associated to the chemically reduced graphene materials still remain and alter their electrochemical properties dramatically. We propose a method for the purification of graphenes based on thermal treatment at 1,000 degrees C in chlorine atmosphere to reduce the effect of such impurities on the electrochemical properties. Our f

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

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Proceedings of the National Academy of Sciences of the United States of America

ISSN

0027-8424

e-ISSN

—

Svazek periodika

109

Číslo periodika v rámci svazku

32

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

12899-12904

Kód UT WoS článku

000307551700021

EID výsledku v databázi Scopus

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