| Titre : |
Titanium dioxide and silver nanoparticles applied in mineral paints for outdoor and indoor environments |
| Type de document : |
texte imprimé |
| Auteurs : |
Isabel C. R. Gomes, Auteur ; Katia J. Ciuffi, Auteur ; Liziane Marçal, Auteur ; Lucas A. Rocha, Auteur ; Eduardo J. Nassar, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 1483-1498 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adsorption
Angle de contact
Argent
Dioxyde de titane
Formulation (Génie chimique)
Liants
Nanoparticules
Oxydes métalliques
pH
Photocatalyse
Revêtements -- Analyse:Peinture -- Analyse
Semiconducteurs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Here, we have evaluated water-based paint formulations containing mineral binders, silver nanoparticles, and titanium dioxide. Scanning electron microscopy analysis of dried film samples showed that the paint base was highly porous, and that paint formulations containing 10% and 20% titanium dioxide had different surface morphology. CIELab measurements for methylene blue coloration decay showed that photocatalysis was more efficient for the samples with 20% titanium dioxide. Under ultraviolet radiation, silver nanoparticles contributed to photocatalysis performance. Contact angles proved that titanium dioxide concentration and type defined the wetting characteristics. The samples with 20% TiO2 displayed porous surfaces with better adsorbance characteristics, higher wettability, and improved heterogeneous photocatalysis. |
| Note de contenu : |
- EXPERIMENTAL DETAILS : Chemicals and reagents - Solution of silver nanoparticles - Paint formulations - Determination of pH - Scanning electron microscopy (SEM) - X-ray diffraction (XRD) - Contact angle - Evaluation of adsorption kinetics - Photocatalysis
- RESULTS AND DISCUSSION : Silver nanoparticles – Ag-NPs pH measurement - Scanning electron microscopy (SEM) - X-ray diffraction (XRD) - Contact angle - Photocatalysis - Adsorption |
| DOI : |
https://doi.org/10.1007/s11998-023-000909-w |
| En ligne : |
https://drive.google.com/file/d/1lCq0E6CK12Cn7_L7Vuz8M4a1m_4fWspc/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41312 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 4 (07/2024) . - p. 1483-1498
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