Highly Sensitive Determination of 2,4,6-Trichlorophenol by Using a Novel SiO₂@MIPIL Fluorescence Sensor with a Double...

Area of Science:

• Analytical Chemistry
• Materials Science
• Environmental Science

Background:

• 2,4,6-trichlorophenol (TCP) is a persistent organic pollutant with significant environmental and health concerns.
• Developing sensitive and selective detection methods for TCP is crucial for environmental monitoring.

Purpose of the Study:

• To prepare a novel SiO2@MIPIL fluorescence sensor for the highly sensitive detection of 2,4,6-trichlorophenol.
• To evaluate the sensor's performance, including sensitivity, selectivity, stability, and reusability.

Main Methods:

• Surface molecular imprinting technology was employed using SiO2 microspheres as carriers.
• A double recognition fluorescence functional monomer, 3,3'-(anthracene-9,10-diylbis(methylene))bis(1-vinyl-1H-imidazole-3-ium) chloride, was synthesized.
• Characterization of the SiO2@MIPIL polymer was performed using FTIR, SEM, TEM, laser confocal microscopy, and NMR.

Main Results:

• The SiO2@MIPIL sensor exhibited a wide linear range (0.1-50 nM) and a low detection limit (89 pM).
• Detection time was significantly reduced to approximately 1.5 minutes compared to bulk polymerization methods.
• The sensor demonstrated high specificity, sensitivity, stability, and reusability.
• Satisfactory results were achieved in the analysis of industrial wastewater and spiked environmental water samples.

Conclusions:

• The developed SiO2@MIPIL fluorescence sensor is highly effective for sensitive and rapid detection of 2,4,6-trichlorophenol.
• The sensor's performance characteristics make it suitable for practical environmental monitoring applications.
• Surface molecular imprinting technology provides a robust platform for developing advanced chemical sensors.