Facile and green synthesis of fluorescent carbon dots from the flowers of Abelmoschus manihot (Linn.) Medicus for sensitive detection of 2,4,6-trinitrophenol and cellular imaging
| Autor: | Die Gao, Kailian Zhang, Min Wang, Qifeng Fu, Yuyan Wan, Manjie Gao, Lujun Wang, Zhining Xia |
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| Rok vydání: | 2019 |
| Předmět: |
Detection limit
biology Metal ions in aqueous solution Cellular imaging 010401 analytical chemistry Quantum yield chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Fluorescence 0104 chemical sciences Analytical Chemistry chemistry Tap water 0210 nano-technology Abelmoschus manihot Carbon Spectroscopy Nuclear chemistry |
| Zdroj: | Microchemical Journal. 148:385-396 |
| ISSN: | 0026-265X |
| DOI: | 10.1016/j.microc.2019.05.026 |
| Popis: | A new type of carbon dots (CDs) was synthesized via a one-pot hydrothermal method by using the flowers of Abelmoschus manihot (Linn.) Medicus as precursors for the first time. The CDs exhibited strong blue emission with a fluorescence quantum yield (QY) of 30.8%. Further, the fluorescence intensity of CDs was found to be rapidly and sensitively quenched by 2,4,6-trinitrophenol (TNP), an environmental pollutant. The linear response of TNP ranged from 25 nM to 40 μM with a limit of detection (LOD) of 5 nM. Moreover, the fluorescence quenching effect of TNP on CDs was much higher than those for other competitive compounds and metal ions. The results demonstrated that CDs had high selectivity to TNP. Furthermore, the CDs were successfully applied for the determination of TNP in tap water and river water with the recoveries ranging from 92.6% to 113% (RSD |
| Databáze: | OpenAIRE |
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