CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions

Thumbnail
2021
Saopštenje sa konferencije štampano u celini (793.0Kb)
Authors
Dorontić, Slađana
Marković, Olivera
Kleut, Duška
Jovanović, Svetlana
Conference object (Published version)
Metadata
Show full item record
Abstract
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 (25γ-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 µmol L-1. It was demonstrated that PL intensities decreased linearly in the concentration range 0-2.5 µmol L-1. The value of the coefficient of determination (R2= 0.95949) indicates the potential of 25γ-GQDs for application in optical sensing of Co2+ ions.
Keywords:
Graphene quantum dots / electrochemical oxidation / graphite electrodes / Co2+ ions
Source:
Proceedings - The 27th International Symposium on Analytical and Environmental Problems, 2021, 107-111
Publisher:
  • Szeged, Hungary : University of Szeged
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča) (RS-200017)
Note:
  • 27th International Symposium on Analytical and Environmental Problems, Szeged, Hungary, November 22-23, 2021

ISBN: 978-963-306-835-9

[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_cer_4882
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4882
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - CONF
AU  - Dorontić, Slađana
AU  - Marković, Olivera
AU  - Kleut, Duška
AU  - Jovanović, Svetlana
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4882
AB  - 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 
(25γ-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 µmol L-1. It was demonstrated that PL intensities decreased linearly in the concentration range 0-2.5 µmol L-1. The value of the coefficient of determination (R2= 0.95949) indicates the potential of 25γ-GQDs for application 
in optical sensing of Co2+ ions.
PB  - Szeged, Hungary : University of Szeged
C3  - Proceedings - The 27th International Symposium on Analytical and  Environmental Problems
T1  - Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions
SP  - 107
EP  - 111
UR  - https://hdl.handle.net/21.15107/rcub_cer_4882
ER  - 
@conference{
author = "Dorontić, Slađana and Marković, Olivera and Kleut, Duška and Jovanović, Svetlana",
year = "2021",
abstract = "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 
(25γ-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 µmol L-1. It was demonstrated that PL intensities decreased linearly in the concentration range 0-2.5 µmol L-1. The value of the coefficient of determination (R2= 0.95949) indicates the potential of 25γ-GQDs for application 
in optical sensing of Co2+ ions.",
publisher = "Szeged, Hungary : University of Szeged",
journal = "Proceedings - The 27th International Symposium on Analytical and  Environmental Problems",
title = "Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions",
pages = "107-111",
url = "https://hdl.handle.net/21.15107/rcub_cer_4882"
}
Dorontić, S., Marković, O., Kleut, D.,& Jovanović, S.. (2021). Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions. in Proceedings - The 27th International Symposium on Analytical and  Environmental Problems
Szeged, Hungary : University of Szeged., 107-111.
https://hdl.handle.net/21.15107/rcub_cer_4882
Dorontić S, Marković O, Kleut D, Jovanović S. Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions. in Proceedings - The 27th International Symposium on Analytical and  Environmental Problems. 2021;:107-111.
https://hdl.handle.net/21.15107/rcub_cer_4882 .
Dorontić, Slađana, Marković, Olivera, Kleut, Duška, Jovanović, Svetlana, "Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions" in Proceedings - The 27th International Symposium on Analytical and  Environmental Problems (2021):107-111,
https://hdl.handle.net/21.15107/rcub_cer_4882 .

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB
 

 

All of DSpaceInstitutions/communitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB