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Publication
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| Title of Article |
The synthesis of nitrogen and sulfur co-doped graphene quantum dots for fluorescence detection of cobalt(II) ions in water |
| Date of Acceptance |
28 November 2019 |
| Journal |
| Title of Journal |
Materials Chemistry Frontiers |
| Standard |
ISI |
| Institute of Journal |
ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND |
| ISBN/ISSN |
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| Volume |
4 |
| Issue |
2 |
| Month |
November |
| Year of Publication |
2020 |
| Page |
507-516 |
| Abstract |
A fluorescent sensor based on nitrogen and sulfur co-doped graphene quantum dots (N,S-GQDs) has been developed for the convenient, sensitive, and selective detection of cobalt(II) ions (Co2+). Co2+ can quench the fluorescence intensity of N,S-GQDs through metal–ligand interaction between the metal ions and the surface functional groups of the fluorescent probe. Furthermore, the addition of Co2+ induces the aggregation of N,S-GQDs, resulting in an enhancement of UV-Visible absorption at 430 nm and color change from colorless to yellow-brown within 3 minutes. The fluorescence intensity of N,S-GQDs can be used to sense Co2+ under the optimal circumstances with a detection limit of 1.25 μM and a working linear range of 0–40 μM. In addition, the sensor probe was applied successfully to the determination of Co2+ in real water samples. Due to its low cytotoxicity, the proposed sensor may potentially be applied in environmental and biological fields. |
| Keyword |
Graphene quantum dots, Chemical sensor, Cobalt ions, Optical nanomaterial |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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