relation: http://acta.bibl.u-szeged.hu/75937/
title: Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions
creator:  Dorontić Slađana
creator:  Marković Olivera
creator:  Kleut Duška
creator:  Jovanovic Svetlana
subject: 01. Természettudományok
subject: 01.04. Kémiai tudományok
description: 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: University of Szeged
date: 2021
type: Konferencia vagy workshop anyag
type: NonPeerReviewed
format: part
language: hu
identifier: http://acta.bibl.u-szeged.hu/75937/1/proceedings_of_isaep_2021_107-111.pdf
identifier:    Dorontić Slađana;  Marković Olivera;  Kleut Duška;  Jovanovic Svetlana:   Amino functionalized graphene quantum dots - new fluorescent sensor for Co2+ ions.   
language: eng