Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions
Conference object (Published version)
Metadata
Show full item recordAbstract
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+ ionsSource:
Proceedings - The 27th International Symposium on Analytical and Environmental Problems, 2021, 107-111Publisher:
- 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
Collections
Institution/Community
IHTMTY - 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 .