Abstract
The graphite carbon nitride (g-C3N4) nanosheets were synthesized and applied for the detection of Ag+ ion in aqueous solutions. Transmission electron microscopy, Fourier infrared spectroscopy, x-ray diffraction, ultraviolet/visible and photoluminescence spectroscopy were used for characterization of g-C3N4 nanosheets. The fluorescence intensity of g-C3N4 nanosheets decreases with the increase in the concentration of Ag+. The fluorescence probe can be applied for detection of Ag+. The results show that it has high selectivity to Ag+ and exhibits a good linearity over the concentration range 0.020–2.0 μM with a detection limit of 27 nM. Most cations do not have any interference on the detection of Ag+. The quenching process is assessed and discussed. Finally, the g-C3N4 nanosheets have been successfully used for the detection of Ag+ in real water samples. The recoveries of spiked water samples are > 97%.
Original language | English |
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Pages (from-to) | 122-127 |
Number of pages | 6 |
Journal | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy |
Volume | 169 |
DOIs | |
Publication status | Published - 5 Dec 2016 |
Scopus Subject Areas
- Analytical Chemistry
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Spectroscopy
User-Defined Keywords
- Fluorescence quenching
- g-CN nanosheets
- Silver ion