| Titre : |
Preparation of hydrophobic SiO2@(TiO2/MoS2) composite film and its self-cleaning properties |
| Type de document : |
texte imprimé |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 1147-1158 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésion
Bisulfure de Molybdène
Dioxyde de silicium
Dioxyde de titane
Encapsulation
Hydrophobie
Photocatalyse
Revêtement auto-nettoyant
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
TiO2/MoS2 composite was encapsulated by hydrophobic SiO2 nanoparticles using a sol–gel hydrothermal method with methyltriethoxysilane (MTES), titanium tetrachloride (TiCl4), and molybdenum disulfide (MoS2) as raw materials. Then, a novel dual functional composite film with hydrophobicity and photocatalytic activity was fabricated on a glass substrates via the combination of polydimethylsiloxane adhesives and hydrophobic SiO2@(TiO2/MoS2) composite particles. The influence of the mole ratios of MTES to TiO2/MoS2 (M:T) on the wettability and photocatalytic activity of the composite film was discussed. The surface morphology, chemical compositions, and hydrophobicity of the composite film on the glass substrate were investigated by scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and water contact angle (water CA) measurements. The results indicated that the composite film exhibited stable superhydrophobicity and excellent photocatalytic activity for degradation of methyl orange (MO) even after five continuous cycles of photocatalytic reaction when M/T was 7:1. The water CA and degradation efficiency for MO remained at 154° and 94%, respectively. Further, the composite film showed a good non-sticking characteristic with the water sliding angle (SA) at about 4°. The SiO2@(TiO2/MoS2) composite consisting of hydrophobic SiO2 nanoparticles and TiO2/MoS2 heterostructure could provide synergistic effects for maintaining long-term self-cleaning performance. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Sample preparation - Characterization - Evaluation of photocatalytic degradation performance
- RESULTS AND DISCUSSION : Mechanism analysis of MTES modification - Structure and composition analysis - Optical absorption and photocatalytic activity analysis - RET surface area and pore size analysis - Influence of M/T on wettability and photocatalytic activity - Stability experiment of MO degradation - Morphology analysis - Adhesion of the composite film - Schematic analysis of self-cleaning process on composite film |
| DOI : |
10.1007/s11998-016-9907-0 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9907-0.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29149 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 5 (09/2017) . - p. 1147-1158
Aller sur edunet
Accueil
Preparation of hydrophobic SiO2@(TiO2/MoS2) composite film and its self-cleaning properties in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)
