Lipid Enhanced Exfoliation for Production of Graphene Nanosheets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F13%3A33145709" target="_blank" >RIV/61989592:15310/13:33145709 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.acs.org/doi/ipdf/10.1021/jp401277g" target="_blank" >http://pubs.acs.org/doi/ipdf/10.1021/jp401277g</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/jp401277g" target="_blank" >10.1021/jp401277g</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Lipid Enhanced Exfoliation for Production of Graphene Nanosheets

Popis výsledku v původním jazyce

Liquid-phase exfoliation of graphite is a widely used method to obtain graphene nanosheets, and therefore the development of a simple and efficient exfoliation procedure remains challenging. Here, we present a one-step method of graphene exfoliation in lecithin/chloroform solution. The graphene nanosheets produced by the lecithin assisted exfoliation method were analyzed by microscopy techniques, including statistical analysis of atomic force microscopy (AFM) images and Raman spectroscopy, which both indicate the presence of few-layer graphene nanosheets, including substantial content of three-layer sheets. Molecular dynamics simulations on the time scale of 0.5+ mu s suggested that stability of the obtained colloid may originate from formation of lecithin reverse hemimicelles and micelles, which prevents the aggregation of exfoliated graphene flakes by entropic repulsion of the lipid hydrophobic chains.

Název v anglickém jazyce

Lipid Enhanced Exfoliation for Production of Graphene Nanosheets

Popis výsledku anglicky

Liquid-phase exfoliation of graphite is a widely used method to obtain graphene nanosheets, and therefore the development of a simple and efficient exfoliation procedure remains challenging. Here, we present a one-step method of graphene exfoliation in lecithin/chloroform solution. The graphene nanosheets produced by the lecithin assisted exfoliation method were analyzed by microscopy techniques, including statistical analysis of atomic force microscopy (AFM) images and Raman spectroscopy, which both indicate the presence of few-layer graphene nanosheets, including substantial content of three-layer sheets. Molecular dynamics simulations on the time scale of 0.5+ mu s suggested that stability of the obtained colloid may originate from formation of lecithin reverse hemimicelles and micelles, which prevents the aggregation of exfoliated graphene flakes by entropic repulsion of the lipid hydrophobic chains.

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry Part C: Nanomaterials, Interfaces and Hard Matter

ISSN

1932-7447

e-ISSN

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Svazek periodika

117

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

11800-11803

Kód UT WoS článku

000320214800042

EID výsledku v databázi Scopus

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