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Query: "author" (Nataša Logar) .

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Impact of dye encapsulation in ZIF-8 on ▫$CO_2$▫, water, and wet ▫$CO_2$▫ sorption
Aljaž Škrjanc, Mojca Opresnik, Matej Gabrijelčič, Andraž Šuligoj, Gregor Mali, Nataša Zabukovec Logar, 2023, original scientific article

Published in DiRROS: 06.11.2023; Views: 190; Downloads: 121
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Colorimetric cutoff indication of relative humidity based on selectively functionalized mesoporous silica
Erika Švara Fabjan, Peter Nadrah, Anja Ajdovec, Matija Tomšič, Goran Dražić, Matjaž Mazaj, Nataša Zabukovec Logar, Andrijana Sever Škapin, 2020, original scientific article

Abstract: 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.
Keywords: turn-on colorimetric probe, selective functionalization, mesoporous silica, relative humidity, capillary condensation
Published in DiRROS: 05.09.2023; Views: 263; Downloads: 194
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Water–aluminum interaction as driving force of linde type A aluminophosphate hydration
Anže Hubman, Janez Volavšek, Tomaž Urbič, Nataša Zabukovec Logar, Franci Merzel, 2023, original scientific article

Published in DiRROS: 01.09.2023; Views: 302; Downloads: 144
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Green synthesis approaches toward preparation of ZIF-76 and its thermal behavior
Marija Švegovec, Aljaž Škrjanc, Andraž Krajnc, Nataša Zabukovec Logar, 2023, original scientific article

Published in DiRROS: 26.05.2023; Views: 293; Downloads: 195
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Tuning size and properties of zinc ascorbate metal-organic framework via acid modulation
Tia Kristian Tajnšek, Nataša Zabukovec Logar, Matjaž Mazaj, 2023, original scientific article

Published in DiRROS: 09.01.2023; Views: 447; Downloads: 202
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