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- Title
Grass-derived carbon nanodots as a fluorescent-sensing platform for label-free detection of Cu (II) ions.
- Authors
Khalid, Hira; Khan, Muhammad Farooq; Ahmad, Bilal; Ismail, Muhammad; Zahid, Muhammad; Ismail, Ahmed
- Abstract
Herein, carbon nanodots (CNDs) were facilely synthesized using grass as a carbon source by the reflux method. The as-synthesized CNDs were well characterized by UV–Vis spectroscopy, Fluorescence spectroscopy, XRD, FTIR, and SEM. The characterization results revealed that grass-derived CNDs showed strong absorption and fluorescence emission peak and are amorphous with the surface rich in carboxyl and hydroxyl groups. The average particle size is 20 nm with a narrow size distribution. The CNDs showed excellent fluorescent sensitivity and selectivity for the detection of Cu2+ ions with a limit of detection as low as 0.89 μM with a linear detection range of 1–20 μM offering a novel sensing platform for Cu2+ ion.
- Subjects
CARBON nanodots; IONS; FLUORESCENCE spectroscopy; ULTRAVIOLET-visible spectroscopy; CARBOXYL group; HYDROXYL group
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 8, p5626
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-07749-1