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: Academic Journal
DOI: 10.1007/s10854-022-07749-1

Grass-derived carbon nanodots as a fluorescent-sensing platform for label-free detection of Cu (II) ions.

Khalid, Hira; Khan, Muhammad Farooq; Ahmad, Bilal; Ismail, Muhammad; Zahid, Muhammad; Ismail, Ahmed