A gel fluorescence sensor based on CDs@SiO 2 /FeS 2 @MIPs for the visual detection of p -chlorophenol

There is a critical need for the rapid detection of -chlorophenol produced by pesticide abuse and industrial wastewater discharge, which has been an urgent problem in the realm of environmental protection. Here, a green and environmentally friendly method was developed to prepare stable and low toxi...

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Bibliographic Details
Published in:Analytical methods 2022-05, Vol.14 (17), p.1721-1729
Main Authors: Deng, Di, Fang, Xiaoyu, Duan, Ding, Li, Kang
Format: Article
Language:English
Subjects:
Chlorophenols
Quantum Dots
Silicon Dioxide
Spectrometry, Fluorescence
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Summary:There is a critical need for the rapid detection of -chlorophenol produced by pesticide abuse and industrial wastewater discharge, which has been an urgent problem in the realm of environmental protection. Here, a green and environmentally friendly method was developed to prepare stable and low toxicity quantum dots. First, blue-green fluorescent FeS quantum dots (B-FeS QDs) were prepared with FeCl ·6H O (an iron source) and L-cysteine (a capping agent) by the solvothermal method. By combining B-FeS QDs with orange carbon dots (O-CDs), a CDs@SiO /FeS @MIPs visual fluorescence sensor for the selective detection of -chlorophenol was constructed. Under optimum conditions, this sensor exhibited a detection limit of 1.265 μM with a linear range of 5.00-50.00 μM and was successfully applied to detect -chlorophenol in real samples. Moreover, this sensor was successfully applied to visual semi-quantitative detection of -chlorophenol. This work demonstrated that these sensors, based on FeS QDs and CDs, had potentials for and visual detection of environmental contaminants.
ISSN:1759-9660
1759-9679
DOI:10.1039/D1AY01849C