Narasimhappa, P and Singh, S and Ramamurthy, PC (2023) Synthesis of water-soluble CdS quantum dots for the fluorescence detection of tetracycline. In: Environmental Pollution, 338 .
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Abstract
An effective strategy for combating antibiotic-resistant bacteria (ARB) entails the early detection of antibiotics during the initial stages of water treatment facilities. In this context, cadmium sulfide quantum dots (CdS QDs) were employed for the precise detection of tetracycline (TET), an emerging contaminant, in water. CdS QDs with fluorescence properties were synthesized by culturing Citrobacter freundii bacteria. The CdS QDs were characterized by spectroscopy techniques, and the quantum efficiency was estimated to be 55.8% which is ∼2-fold high compared to the standard rhodamine-B solution. The fluorescence of CdS QDs was quenched at 440 nm in the presence of TET. The linear range of TET was varied from 10 to 100 μM with a lower limit of detection of ∼23 nM. The CdS QDs were used to detect TET in river water, tap water, and milk which showed an excellent recovery rate. Therefore, the novel biosynthesis CdS QDs can be a significant fluorescence probe for the detection of TET that shows exceptional sensitivity and selectivity. © 2023 Elsevier Ltd
| Item Type: | Journal Article |
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| Publication: | Environmental Pollution |
| Publisher: | Elsevier Ltd |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | Bacteria; Biochemistry; Cadmium sulfide; Fluorescence; II-VI semiconductors; Nanocrystals; Probes; Semiconductor quantum dots; Water treatment, Antibiotic-resistant bacteria; Cadmium sulfide quantum dots; Cds quantum dots(QDs); Citrobacter freundii; Fluorescence detection; Fluorescence probes; Quantum dot; Tetracycline; Water treatment facilities; Watersoluble, Antibiotics, antibiotic resistance; detection method; experimental study; factor analysis; laboratory method; sensitivity analysis; solubility |
| Department/Centre: | Division of Interdisciplinary Sciences > Interdisciplinary Centre for Water Research Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
| Date Deposited: | 12 Dec 2023 04:29 |
| Last Modified: | 12 Dec 2023 04:29 |
| URI: | https://eprints.iisc.ac.in/id/eprint/83357 |
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