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Colorimetric cutoff indication of relative humidity based on selectively functionalized mesoporous silicaŠvara Fabjan, Erika ...We present a novel % cutoff concept of colorimetric indication of relative humidity based on dye dissolution in condensed water in capillaries of selectively functionalized mesoporours host SiO2 ... material. Consistently high levels of indoor air humidity induces mold and algae growth which represent a potential risks for human health and have deteriorating effect on walls as well. Simple localized humidity detection of high humidity with naked eye especially at places with low air circulation, where growth of mold usually starts first, is therefore highly desirable. The reporting dye was integrated in the non-functionalized mesoporous silica matrix with different pore diameters and selective-functionalized mesoporous silica material. After exposure to the environment of different air humidities the dye dissolved in water causing color change of adsorbent. With the use of adsorbents with different mesopore diameters high ability to tune the value of relative humidity when complete capillary condensation occurred was achieved. Materials with pore diameters of 3.0%nm, 3.5%nm and 7.0%nm exhibit gradual color change when reaching relative humidity up to 55, 79 and 88 RH% respectively. After selective methylation of the material with 7.0%nm pore diameter, non-gradual cutoff color change was achieved. Sample exhibited color change at narrow range of relative humidity (cutoff color change). Due to selective functionalized outer surface the dye dissolution occur only in condensed water in pores and therefore provide colorimetric indication only in this range. Selectively modified silica material has a great potential for a straightforward detection of high humid environment.Source: Sensors and actuators. B, Chemical. - ISSN 0925-4005 (Vol. 316, [article no.] 128138, 1 Aug. 2020, str. 1-11)Type of material - article, component part ; adult, seriousPublish date - 2020Language - englishCOBISS.SI-ID - 2570599
Author
Švara Fabjan, Erika |
Nadrah, Peter |
Ajdovec, Anja |
Tomšič, Matija, kemik |
Dražić, Goran |
Mazaj, Matjaž |
Zabukovec Logar, Nataša |
Sever Škapin, Andrijana
Topics
kolorimetrični sistem za indikacijo |
selektivna funkcionalizacija |
mezoporozen silicijev dioksid |
relativna vlažnost |
kapilarna kondenzacija |
odprti dostop |
turn-on colorimetric probe |
selective functionalization |
mesoporous silica |
relative humidity |
capillary condensation |
open access
Author | Švara Fabjan, Erika ... |
Title | Colorimetric cutoff indication of relative humidity based on selectively functionalized mesoporous silica |
Publication date | 2020-04-19 |
COBISS.SI-ID | 2570599 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International |
Embargo | Immediate publication for public |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
---|---|---|---|
Kolorimetrično določanje relativne vlažnosti na osnovi mezoporoznih SiO2 delcev | Z1-8149-2017 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Nanoporozni materiali | P1-0021-2020 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Gradbeni objekti in materiali | P2-0273-2015 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Fizikalna kemija | P1-0201-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Napredni materiali za nizkoogljično in trajnostno družbo | P2-0393-2022 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
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Link |
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https://www.sciencedirect.com/science/article/pii/S0925400520304883?via%3Dihub |
https://dirros.openscience.si/IzpisGradiva.php?id=16904 |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Švara Fabjan, Erika | 32022 |
Nadrah, Peter | 32104 |
Ajdovec, Anja | |
Tomšič, Matija, kemik | 21418 |
Dražić, Goran | 02556 |
Mazaj, Matjaž | 25023 |
Zabukovec Logar, Nataša | 14120 |
Sever Škapin, Andrijana | 12521 |
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