Self-cleaning coatings for sandstones

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F25%3A00648033" target="_blank" >RIV/68145535:_____/25:00648033 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27360/25:10259058

Výsledek na webu

<a href="https://doi.org/10.37904/nanocon.2024.5015" target="_blank" >https://doi.org/10.37904/nanocon.2024.5015</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37904/nanocon.2024.5015" target="_blank" >10.37904/nanocon.2024.5015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Self-cleaning coatings for sandstones

Popis výsledku v původním jazyce

In this research, we tested the performance of the self-cleaning coatings based on exfoliated g-C3N4 applied on the surface of sandstone. Research activities include: i) preparation of exfoliated g-C3N4, ii) preparation of exfoliated g-C3N4 water suspensions, iii) application of the suspensions on the surface of the sandstone samples, and iv) testing of the self-cleaning performance. Exfoliated g-C3N4 was prepared by thermal exfoliation of bulk g-C3N4 prepared by thermal polycondensation of melamine. Samples were characterized using elemental analysis, infrared spectroscopy, scanning electron microscopy, the band gap values were determined with help of reflectance spectra measured using UV-VIS DRS spectrometry. Rhodamine B dye was used a model substance to evaluate the photodegradation activity of prepared samples, and the results showed significantly better photodegradation performance of exfoliated sample, which was further used for application on the surface of sand stone. Water suspensions of g-C3N4 (2 and 4 g∙dm-3) were prepared and applied on the surface of the sandstone samples using the spraying technique. Such prepared samples were subjected to the self-cleaning performance test based on the discoloration of rhodamine B under VIS irradiation and constant humidity and temperature. Changes in the a* coordinate in CIE L*a*b* color space were used to quantitatively monitor the discoloration of the tested samples.

Název v anglickém jazyce

Self-cleaning coatings for sandstones

Popis výsledku anglicky

In this research, we tested the performance of the self-cleaning coatings based on exfoliated g-C3N4 applied on the surface of sandstone. Research activities include: i) preparation of exfoliated g-C3N4, ii) preparation of exfoliated g-C3N4 water suspensions, iii) application of the suspensions on the surface of the sandstone samples, and iv) testing of the self-cleaning performance. Exfoliated g-C3N4 was prepared by thermal exfoliation of bulk g-C3N4 prepared by thermal polycondensation of melamine. Samples were characterized using elemental analysis, infrared spectroscopy, scanning electron microscopy, the band gap values were determined with help of reflectance spectra measured using UV-VIS DRS spectrometry. Rhodamine B dye was used a model substance to evaluate the photodegradation activity of prepared samples, and the results showed significantly better photodegradation performance of exfoliated sample, which was further used for application on the surface of sand stone. Water suspensions of g-C3N4 (2 and 4 g∙dm-3) were prepared and applied on the surface of the sandstone samples using the spraying technique. Such prepared samples were subjected to the self-cleaning performance test based on the discoloration of rhodamine B under VIS irradiation and constant humidity and temperature. Changes in the a* coordinate in CIE L*a*b* color space were used to quantitatively monitor the discoloration of the tested samples.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings 16th International Conference on Nanomaterials - Research & Application

ISBN

978-80-88365-24-2

ISSN

2694-930X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

201-206

Název nakladatele

TANGER Ltd.

Místo vydání

Ostrava-Zábřeh

Místo konání akce

OREA Congress Hotel Brno

Datum konání akce

16. 10. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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