TY  - CONF
PB  - University of Szeged
KW  - Környezetkémia
KW  -  Kémia
TI  - Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions
CY  - Szeged
SP  - 107
A1  -  Doronti? Sla?ana
A1  -  Markovi? Olivera
A1  -  Kleut Du?ka
A1  -  Jovanovic Svetlana
AV  - public
UR  - http://acta.bibl.u-szeged.hu/75937/
N2  - Graphene quantum dots (GQDs) were fabricated by simple electrochemical oxidation of graphite electrodes. Modified GQDs were obtained by gamma irradiation of GQDs, EDA, and IPA mixture at a dose of 25 kGy. In this approach, GQDs with the amino groups were produced (25?-GQDs). These GQDs have shown a high uniformity, good dispersibility in water, and strong photoluminescence in the blue part of the electromagnetic spectrum. Modified GQDs were studied in the optical detection of Co2+ ions. The PL intensities of GQDs were measured in the presence of Co2+ ions in the concentration range 0-7.5 ľmol L-1 . It was demonstrated that PL intensities decreased linearly in the concentration range 0-2.5 ľmol L-1 . The value of the coefficient of determination (R2= 0.95949) indicates the potential of 25?-GQDs for application in optical sensing of Co2+ ions.
T2  - International Symposium on Analytical and Environmental Problems (27.) (2021) (Szeged)
N1  - Bibliogr.: 111. p. ; ill. ; összefoglalás angol nyelven
ID  - acta75937
Y1  - 2021///
VL  - 27
EP  - 111
SN  - 978-963-306-835-9
ER  -