Synthetic routes contaminate graphene materials with a whole spectrum of unanticipated metallic elements

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F14%3A00433715" target="_blank" >RIV/61388963:_____/14:00433715 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/14:00433715 RIV/60461373:22310/14:43897464

Výsledek na webu

<a href="http://dx.doi.org/10.1073/pnas.1413389111" target="_blank" >http://dx.doi.org/10.1073/pnas.1413389111</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1073/pnas.1413389111" target="_blank" >10.1073/pnas.1413389111</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthetic routes contaminate graphene materials with a whole spectrum of unanticipated metallic elements

Popis výsledku v původním jazyce

he synthesis of graphene materials is typically carried out by oxidizing graphite to graphite oxide followed by a reduction process. Numerous methods exist for both the oxidation and reduction steps, which causes unpredictable contamination from metallicimpurities into the final material. These impurities are known to have considerable impact on the properties of graphene materials. We synthesized several reduced graphene oxides from extremely pure graphite using several popular oxidation and reductionmethods and tracked the concentrations of metallic impurities at each stage of synthesis. We show that different combinations of oxidation and reduction introduce varying types as well as amounts of metallic elements into the graphene materials, and their origin can be traced to impurities within the chemical reagents used during synthesis. These metallic impurities are able to alter the graphene materials' electrochemical properties significantly and have wide-reaching implications on

Název v anglickém jazyce

Synthetic routes contaminate graphene materials with a whole spectrum of unanticipated metallic elements

Popis výsledku anglicky

he synthesis of graphene materials is typically carried out by oxidizing graphite to graphite oxide followed by a reduction process. Numerous methods exist for both the oxidation and reduction steps, which causes unpredictable contamination from metallicimpurities into the final material. These impurities are known to have considerable impact on the properties of graphene materials. We synthesized several reduced graphene oxides from extremely pure graphite using several popular oxidation and reductionmethods and tracked the concentrations of metallic impurities at each stage of synthesis. We show that different combinations of oxidation and reduction introduce varying types as well as amounts of metallic elements into the graphene materials, and their origin can be traced to impurities within the chemical reagents used during synthesis. These metallic impurities are able to alter the graphene materials' electrochemical properties significantly and have wide-reaching implications on

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

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

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Svazek periodika

111

Číslo periodika v rámci svazku

38

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

13774-13779

Kód UT WoS článku

000341988200035

EID výsledku v databázi Scopus

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