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

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 ethylenediamine. Before irradiation, oxygen was removed from the GQDs dispersion by purging with Ar. These conditions induced both che...

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Elmentve itt :
Bibliográfiai részletek
Szerzők: Dorontić Slađana
Marković Olivera
Kleut Duška
Jovanovic Svetlana
Testületi szerző: International Symposium on Analytical and Environmental Problems (27.) (2021) (Szeged)
Dokumentumtípus: Könyv része
Megjelent: University of Szeged Szeged 2021
Sorozat:Proceedings of the International Symposium on Analytical and Environmental Problems 27
Kulcsszavak:Környezetkémia, Kémia
Tárgyszavak:
Online Access:http://acta.bibl.u-szeged.hu/75949
Leíró adatok
Tartalmi kivonat: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 ethylenediamine. 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.
Terjedelem/Fizikai jellemzők:143-147
ISBN:978-963-306-835-9