Surface functionalization of a chalcogenide IR photonic sensor by means of a polymer membrane for water pollution remediation.

Autor:	Vrážel M; Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic., Ismail RK; Univ Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France. virginie.nazabal@univ-rennes.fr.; BRGM, Direction Eau, Environnement et Ecotechnologies, 45100 Orleans, France., Courson R; IFREMER, Laboratoire Détection, Capteurs et Mesures, 29280 Plouzané, France., Hammouti A; Univ Rennes, CNRS, Institut Foton - UMR 6082, F-22305 Lannion, France., Bouška M; Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic., Larrodé A; Univ Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France. virginie.nazabal@univ-rennes.fr., Baillieul M; Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic., Giraud W; CEDRE, Research, 29218 Brest, France., Le Floch S; CEDRE, Research, 29218 Brest, France., Bodiou L; Univ Rennes, CNRS, Institut Foton - UMR 6082, F-22305 Lannion, France., Charrier J; Univ Rennes, CNRS, Institut Foton - UMR 6082, F-22305 Lannion, France., Boukerma K; IFREMER, Laboratoire Détection, Capteurs et Mesures, 29280 Plouzané, France., Michel K; BRGM, Direction Eau, Environnement et Ecotechnologies, 45100 Orleans, France., Němec P; Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic., Nazabal V; Univ Rennes, CNRS, ISCR - UMR6226, F-35000 Rennes, France. virginie.nazabal@univ-rennes.fr.; Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic.
Jazyk:	angličtina
Zdroj:	The Analyst [Analyst] 2024 Sep 09; Vol. 149 (18), pp. 4723-4735. Date of Electronic Publication: 2024 Sep 09.
DOI:	10.1039/d4an00721b
Abstrakt:	Rapid, simultaneous detection of organic chemical pollutants in water is an important issue to solve for protecting human health. This study investigated the possibility of developing an in situ reusable optical sensor capable of selective measurements utilizing a chalcogenide transducer supplemented by a hydrophobic polymer membrane with detection based on evanescent waves in the mid-infrared spectrum. In order to optimise a polyisobutylene hydrophobic film deposited on a chalcogenide waveguide, a zinc selenide prism was utilized as a testbed for performing attenuated total reflection with Fourier-transform infrared spectroscopy. To comply with the levels mentioned in health guidelines, the target detection range in this study was kept rather low, with the concentration range extended from 50 ppb to 100 ppm to cover accidental pollution problems, while targeted hydrocarbons (benzene, toluene, and xylene) were still detected at a concentration of 100 ppb. Infrared measurements in the selected range showed a linear behaviour, with the exception of two constantly reproducible plateau phases around 25 and 80 ppm, which were observable for two polymer film thicknesses of 5 and 10 μm. The polymer was also found to be reusable by regenerating it with water between individual measurements by increasing the water temperature and flow to facilitate reverse exchange kinetics. Given the good conformability of the hydrophobic polymer when coated on chalcogenide photonic circuits and its demonstrated ability to detect organic pollutants in water and to be regenerated afterwards, a microfluidic channel utilising water flow over an evanescent wave optical transducer based on a chalcogenide waveguide and a polyisobutylene (PIB) hydrophobic layer deposited on its surface was successfully fabricated from polydimethylsiloxane by filling a mold prepared via CAD and 3D printing techniques.
Databáze:	MEDLINE
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