Self-cleaning coatings for sandstones

Result code in 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>

Alternative codes found

RIV/61989100:27360/25:10259058

Result on the web

<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>

Result language

angličtina

Original language name

Self-cleaning coatings for sandstones

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Article name in the collection

Proceedings 16th International Conference on Nanomaterials - Research & Application

ISBN

978-80-88365-24-2

ISSN

2694-930X

e-ISSN

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Number of pages

6

Pages from-to

201-206

Publisher name

TANGER Ltd.

Place of publication

Ostrava-Zábřeh

Event location

OREA Congress Hotel Brno

Event date

Oct 16, 2024

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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