N-doped graphene quantum dots for detection of palladium(II) ions and carbofuran

Dorontić, Slađana; Marković, Olivera; Kleut, Duška; Jovanović, Svetlana

2021

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Authors

Dorontić, Slađana
Marković, Olivera

Kleut, Duška
Jovanović, Svetlana

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Abstract

We produced Graphene Quantum Dots (GQDs) by electrochemical oxidation of graphite rods and exposed them to gamma irradiation at a dose of 200 kGy, in the presence of ethylene-diamine. Before irradiation, oxygen was removed from the GQDs dispersion by purging with Ar. These conditions induced both chemical reduction as well as the incorporation of N atoms in the structure of GQDs. Thus, N-doped GQDs were produced. The morphology of dots was investigated using atomic force microscopy. UV-Vis and photoluminescence spectroscopy were used to investigate the optical properties of modified GQDs. The changes in the intensities of PL emission spectra were studied in the presence of different concentrations of Pd2+ and pesticide carbofuran. We observed promising results for the application of N-doped GQDs for non-enzymatic PL detection of selected metal ions and molecules of pesticide.

Keywords:

Graphene Quantum Dots / electrochemical oxidation / morphology / atomic force microscopy / photoluminescence spectroscopy / UV-Vis spectroscopy

Source:
The 27th International Symposium on Analytical and Environmental Problems, 2021, 143-147

Publisher:

Szeged, Hungary : University of Szeged

Funding / projects:

Note:

27th International Symposium on Analytical and Environmental Problems, Szeged, Hungary, November 22-23, 2021

TY  - CONF
AU  - Dorontić, Slađana
AU  - Marković, Olivera
AU  - Kleut, Duška
AU  - Jovanović, Svetlana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4879
AB  - We produced Graphene Quantum Dots (GQDs) by electrochemical oxidation of graphite rods 
and exposed them to gamma irradiation at a dose of 200 kGy, in the presence of ethylene-diamine. Before irradiation, oxygen was removed from the GQDs dispersion by purging with Ar. These conditions induced both chemical reduction as well as the incorporation of N atoms 
in the structure of GQDs. Thus, N-doped GQDs were produced. The morphology of dots was 
investigated using atomic force microscopy. UV-Vis and photoluminescence spectroscopy 
were used to investigate the optical properties of modified GQDs. The changes in the intensities
of PL emission spectra were studied in the presence of different concentrations of Pd2+ and 
pesticide carbofuran. We observed promising results for the application of N-doped GQDs for 
non-enzymatic PL detection of selected metal ions and molecules of pesticide.
PB  - Szeged, Hungary : University of Szeged
C3  - The 27th International Symposium on Analytical and Environmental Problems
T1  - N-doped graphene quantum dots for detection of palladium(II) ions and carbofuran
SP  - 143
EP  - 147
UR  - https://hdl.handle.net/21.15107/rcub_cer_4879
ER  -

@conference{
author = "Dorontić, Slađana and Marković, Olivera and Kleut, Duška and Jovanović, Svetlana",
year = "2021",
abstract = "We produced Graphene Quantum Dots (GQDs) by electrochemical oxidation of graphite rods 
and exposed them to gamma irradiation at a dose of 200 kGy, in the presence of ethylene-diamine. Before irradiation, oxygen was removed from the GQDs dispersion by purging with Ar. These conditions induced both chemical reduction as well as the incorporation of N atoms 
in the structure of GQDs. Thus, N-doped GQDs were produced. The morphology of dots was 
investigated using atomic force microscopy. UV-Vis and photoluminescence spectroscopy 
were used to investigate the optical properties of modified GQDs. The changes in the intensities
of PL emission spectra were studied in the presence of different concentrations of Pd2+ and 
pesticide carbofuran. We observed promising results for the application of N-doped GQDs for 
non-enzymatic PL detection of selected metal ions and molecules of pesticide.",
publisher = "Szeged, Hungary : University of Szeged",
journal = "The 27th International Symposium on Analytical and Environmental Problems",
title = "N-doped graphene quantum dots for detection of palladium(II) ions and carbofuran",
pages = "143-147",
url = "https://hdl.handle.net/21.15107/rcub_cer_4879"
}

Dorontić, S., Marković, O., Kleut, D.,& Jovanović, S.. (2021). N-doped graphene quantum dots for detection of palladium(II) ions and carbofuran. in The 27th International Symposium on Analytical and Environmental Problems
Szeged, Hungary : University of Szeged., 143-147.
https://hdl.handle.net/21.15107/rcub_cer_4879

Dorontić S, Marković O, Kleut D, Jovanović S. N-doped graphene quantum dots for detection of palladium(II) ions and carbofuran. in The 27th International Symposium on Analytical and Environmental Problems. 2021;:143-147.
https://hdl.handle.net/21.15107/rcub_cer_4879 .

Dorontić, Slađana, Marković, Olivera, Kleut, Duška, Jovanović, Svetlana, "N-doped graphene quantum dots for detection of palladium(II) ions and carbofuran" in The 27th International Symposium on Analytical and Environmental Problems (2021):143-147,
https://hdl.handle.net/21.15107/rcub_cer_4879 .