Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 439, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2022.129596
Keywords
Ratiometric fluorescence; Fluoride ion; Carbon dots; Morin-Al3+; Smartphone-assisted visual sensing platform
Categories
Funding
- Central Guidance Fund for Science and Technology Development [YDZJSX2021A004]
- Natural Science Foundation of China [21705101, 21874087]
- Natural Science Foundation of Shanxi Province [201901D211154]
- Science and Technology Innovation Project of Higher Education in Shanxi Province [2020L0047]
Ask authors/readers for more resources
A facile and effective ratiometric fluorescence sensing platform for fluoride ion detection was developed based on the inner filter effect. This platform showed a wide linear range and low detection limit, and can be used as a smartphone-assisted visual sensing platform.
Ratiometric fluorescence sensor has high selectivity and good sensitivity; however, its development is limited by intricate design, tedious synthesis, etc. Herein, a facile and effective ratiometric fluorescence sensing platform for fluoride ion (F-) detection was developed by simply combining nitrogen-doped carbon dots (N-CDs) and morin-Al3+ based on inner filter effect (IFE). The competitive binding of F- to Al3+ obviously decreased morin-Al3+ fluorescence and increased N-CDs fluorescence, attributing to the inhibition of IFE between N-CDs and morin-Al3+. The as-constructed ratiometric fluorescence sensing platform can be used for F- detection with a wide linear range (0.5-150 mu M) and a low detection limit (55.8 nM). Interestingly, with the introduction of F- into the N-CDs/morin-Al3+ sensing platform, a distinguishable change in fluorescence color from green to blue enabled the N-CDs/morin-Al3+ system to be used as a smartphone-assisted visual sensing platform for F- detection with a detection limit of 2.09 mu M. This platform was successfully applied for the onsite monitoring of F- in various water samples with satisfying results. These findings provide a novel guidance for the facile construction of a ratiometric optical dual-mode and smartphone-assisted sensing platform based on CDs, revealing the broad application prospect of CDs in environmental monitoring field.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available