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ZDRAŽIL, L. ZAHRADNÍČEK, R. MOHAN, R. SEDLÁČEK, P. NEJDL, L. SCHMIEDOVÁ, V. POSPÍŠIL, J. HORÁK, M. WEITER, M. ZMEŠKAL, O. HUBÁLEK, J.
Originální název
Preparation of Graphene Quantum Dots through Liquid Phase Exfoliation Method
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Here we report the preparation of low defect blue fluorescent graphene quantum dots (GQDs) through microwave expansion and liquid phase exfoliation (LPE) of graphite flakes with a high preparation yield of 0.63 g of GQDs per 1 g of original graphite substrate. The maximum emission in the prepared GQDs occurs at 467 nm for 370 nm excitation. The photoluminescence quantum yield of the prepared GQDs was measured as 3.4 %. Prepared GQDs are composed of carbon, oxygen and nitrogen elements. They have high percentage (86 %) of C-C/C=C, indicating few structural defects of the graphitic core, due to lesser number of edge- or surface-located oxygenated functional groups. This preparation technique, unlike others, does not require additional chemical components and is energetically undemanding. Furthermore, the reported method is also suitable for scalable preparation of quantum structures from other two-dimensional layered materials.
Klíčová slova
Carbon material; nanoparticles; liquid phase exfoliation; microwave expansion; luminescence
Autoři
ZDRAŽIL, L.; ZAHRADNÍČEK, R.; MOHAN, R.; SEDLÁČEK, P.; NEJDL, L.; SCHMIEDOVÁ, V.; POSPÍŠIL, J.; HORÁK, M.; WEITER, M.; ZMEŠKAL, O.; HUBÁLEK, J.
Vydáno
7. 8. 2018
ISSN
1872-7883
Periodikum
JOURNAL OF LUMINESCENCE
Ročník
1
Číslo
Stát
Nizozemsko
Strany od
203
Strany do
208
Strany počet
6
URL
https://www.sciencedirect.com/science/article/pii/S0022231318307075
BibTex
@article{BUT149162, author="Lukáš {Zdražil} and Radim {Zahradníček} and Rajneesh {Mohan} and Petr {Sedláček} and Lukáš {Nejdl} and Veronika {Schmiedová} and Jan {Pospíšil} and Michal {Horák} and Martin {Weiter} and Oldřich {Zmeškal} and Jaromír {Hubálek}", title="Preparation of Graphene Quantum Dots through Liquid Phase Exfoliation Method", journal="JOURNAL OF LUMINESCENCE", year="2018", volume="1", number="1", pages="203--208", doi="10.1016/j.jlumin.2018.08.017", issn="1872-7883", url="https://www.sciencedirect.com/science/article/pii/S0022231318307075" }