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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F24%3A39922028" target="_blank" >RIV/00216275:25310/24:39922028 - isvavai.cz</a>

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2024/an/d4an00721b" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/an/d4an00721b</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4an00721b" target="_blank" >10.1039/d4an00721b</a>

Result language

angličtina

Original language name

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

Original language description

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 mu m. 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. Optimisation of the functionalisation of infrared chalcogenide sensors for accidental water pollution using a hydrophobic polymer.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20500 - Materials engineering

Project

<a href="/en/project/GA22-05179S" target="_blank" >GA22-05179S: Infrared photonics for chemical sensors: Materials strategy based on amorphous chalcogenides</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Analyst

ISSN

0003-2654

e-ISSN

1364-5528

Volume of the periodical

149

Issue of the periodical within the volume

18

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

4723-4735

UT code for WoS article

001284136500001

EID of the result in the Scopus database

2-s2.0-85200852307