Colorimetry-based System for Gaseous Carbon Dioxide Detection
The study of sensing materials to the detection of carbon dioxide (CO2) was achieved using p-nitrophenol (pNPh) as a colorimetric indicator. The sensing material was polymerized (NPLn), functionalized with 3-triethoxysilyl propyl isocyanate (IPTES) which sensitivity was tested in the form of a membr...
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doaj-0205ce9feb3f44ac8abd5936e52b1b162020-11-27T12:03:03ZengUniversidade do PortoU.Porto Journal of Engineering2183-64932020-11-0162596910.24840/2183-6493_006.002_0006641Colorimetry-based System for Gaseous Carbon Dioxide DetectionJoão Mendes0Luís Coelho1Carlos Manuel de Melo Pereira2Pedro Jorge3CIQUP - Centro de Investigação em Química, Universidade do Porto; INESC TEC - CAP - Centro de Fotónica AplicadaINESC TEC - CAP - Centro de Fotónica AplicadaCIQUP - Centro de Investigação em Química, Universidade do PortoINESC TEC - CAP - Centro de Fotónica AplicadaThe study of sensing materials to the detection of carbon dioxide (CO2) was achieved using p-nitrophenol (pNPh) as a colorimetric indicator. The sensing material was polymerized (NPLn), functionalized with 3-triethoxysilyl propyl isocyanate (IPTES) which sensitivity was tested in the form of a membrane as is and encapsulated in hollow silica nanoparticles. The sensing membranes were tested in a closed gas system comprising very precise flow controllers to deliver different concentrations of CO2 (vs. N2). The combination of the sensing membranes with multimode optical fibers and a dual-wavelength diode (LED) allows the measurement of the CO2 through the analysis of the induced absorbance changes with a self-referenced ratiometric scheme. The analysis of the sensing materials have shown significant changes in their chemical and physical properties and the results attest these materials with a strong potential for assessing CO2 dynamics in environmental, medical, and industrial applications.https://journalengineering.fe.up.pt/article/view/641carbon dioxide detectioncolorimetric membranepolymerizationoptical fiber |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
João Mendes Luís Coelho Carlos Manuel de Melo Pereira Pedro Jorge |
spellingShingle |
João Mendes Luís Coelho Carlos Manuel de Melo Pereira Pedro Jorge Colorimetry-based System for Gaseous Carbon Dioxide Detection U.Porto Journal of Engineering carbon dioxide detection colorimetric membrane polymerization optical fiber |
author_facet |
João Mendes Luís Coelho Carlos Manuel de Melo Pereira Pedro Jorge |
author_sort |
João Mendes |
title |
Colorimetry-based System for Gaseous Carbon Dioxide Detection |
title_short |
Colorimetry-based System for Gaseous Carbon Dioxide Detection |
title_full |
Colorimetry-based System for Gaseous Carbon Dioxide Detection |
title_fullStr |
Colorimetry-based System for Gaseous Carbon Dioxide Detection |
title_full_unstemmed |
Colorimetry-based System for Gaseous Carbon Dioxide Detection |
title_sort |
colorimetry-based system for gaseous carbon dioxide detection |
publisher |
Universidade do Porto |
series |
U.Porto Journal of Engineering |
issn |
2183-6493 |
publishDate |
2020-11-01 |
description |
The study of sensing materials to the detection of carbon dioxide (CO2) was achieved using p-nitrophenol (pNPh) as a colorimetric indicator. The sensing material was polymerized (NPLn), functionalized with 3-triethoxysilyl propyl isocyanate (IPTES) which sensitivity was tested in the form of a membrane as is and encapsulated in hollow silica nanoparticles. The sensing membranes were tested in a closed gas system comprising very precise flow controllers to deliver different concentrations of CO2 (vs. N2). The combination of the sensing membranes with multimode optical fibers and a dual-wavelength diode (LED) allows the measurement of the CO2 through the analysis of the induced absorbance changes with a self-referenced ratiometric scheme. The analysis of the sensing materials have shown significant changes in their chemical and physical properties and the results attest these materials with a strong potential for assessing CO2 dynamics in environmental, medical, and industrial applications. |
topic |
carbon dioxide detection colorimetric membrane polymerization optical fiber |
url |
https://journalengineering.fe.up.pt/article/view/641 |
work_keys_str_mv |
AT joaomendes colorimetrybasedsystemforgaseouscarbondioxidedetection AT luiscoelho colorimetrybasedsystemforgaseouscarbondioxidedetection AT carlosmanueldemelopereira colorimetrybasedsystemforgaseouscarbondioxidedetection AT pedrojorge colorimetrybasedsystemforgaseouscarbondioxidedetection |
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1724413438275354624 |