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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)
[article]
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-nettoyantIndex. 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 filmDOI : 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 : 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[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19230 - Périodique Bibliothèque principale Documentaires Disponible Preparation of metallic coatings with reversibly switchable wettability based on plasma spraying technology / Zhengfeng Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 5 (09/2012)
[article]
Titre : Preparation of metallic coatings with reversibly switchable wettability based on plasma spraying technology Type de document : texte imprimé Auteurs : Zhengfeng Li, Auteur ; Yanjun Zheng, Auteur ; Lishan Cui, Auteur Année de publication : 2012 Article en page(s) : p. 579-587 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acétone L'acétone en chimie, (nom officiel IUPAC propanone, aussi connue sous les noms de diméthylcétone, 2-propanone, propan-2-one et béta-cétopropane), de formule chimique CH3COCH3 est le composé le plus simple de la famille des cétones. C'est un isomère du propanal.L’acétone est un liquide transparent, inflammable, d'odeur caractéristique (plutôt fruitée). Sa température de fusion est de -95,4 °C et celle d'ébullition de 56,53 °C. Elle a une densité relative de 0,819 (à 0 °C). C'est un composé très soluble dans l'eau (c'est une molécule polaire à chaîne carbonée courte), dans l'éthanol et dans l'éther. L'acétone est le dérivé le plus simple de la série des cétones aliphatiques et la présence de la double liaison carbone-oxygène lui confère l'essentiel de sa réactivité.
Hydrophobie
Laurique, Acide
Mouillabilité
Revêtement métallique
Technique des plasmasIndex. décimale : 667.9 Revêtements et enduits Résumé : Plasma spray technology was used for the preparation of metallic coatings with reversibly switchable wettability. By spraying Fe, Cr, and Ni mixture powders with different sizes, a micro/submicro-dual scale morphology was obtained. The resultant metallic coating had a superhydrophilic nature, but could be switched into superhydrophobic by spraying an acetone solution of dodecanoic acid while the sprayed surface remained within a temperature range of 100–200°C, although dodecanoic acid itself has a hydrophilic nature. The obtained superhydrophobic coating remained stable if the temperature was below 200°C. The surface wettability could further be switched between superhydrophilicity and superhydrophobicity within a time-scale of only seconds by heating above 220°C and re-spraying the acetone solution of dodecanoic acid in the temperature range of 100–200°C. A chemisorbed molecular layer of dodecanoic acid was responsible for the decrease of the surface energy, and the Fourier transform infrared spectroscopy (FTIR) results suggested that heating the substrate can greatly facilitate the formation of the chemisorbed layer and preferential orientation of the dodecanoic acid molecule. Note de contenu : - EXPERIMENTAL : Materials - Preparation of the superhydrophobic surface - Evaluation of thermal stability and reversible wettability - Characterization
- RESULTS AND DISCUSSION : Surface morphology of the prepared coating - Chemical composition immediately after APS - Wettability before and after surface modification - Thermal stability and reversible wettabilityDOI : 10.1007/s11998-011-9390-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9390-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16029
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Code-barres Cote Support Localisation Section Disponibilité 14190 - Périodique Bibliothèque principale Documentaires Disponible Preparation of modified montmorillonite/graphene oxide composites to enhance the anticorrosive performance of epoxy coatings / Quanxian Hua in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
[article]
Titre : Preparation of modified montmorillonite/graphene oxide composites to enhance the anticorrosive performance of epoxy coatings Type de document : texte imprimé Auteurs : Quanxian Hua, Auteur ; Ben Jing, Auteur ; Mengyuan He, Auteur ; Panfei Sun, Auteur ; Qiang Zhao, Auteur ; Shilong Su, Auteur ; Guanjie Hu, Auteur ; Songjie Li, Auteur Année de publication : 2023 Article en page(s) : p. 1110-1119 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Caractérisation
Composés organiques -- Synthèse
Electrochimie
Epoxydes
Hydrophobie
Montmorillonite
Oxyde de graphène
Réaction de couplage
Revêtements organiques
SilanesIndex. décimale : 667.9 Revêtements et enduits Résumé : Modified montmorillonite/graphene oxide composites (AM@GO) were prepared by a hydrothermal method with silane coupling agent-modified montmorillonite (APTES@MMT) and combined with GO. The structures of the composites were characterized by FTIR, XRD, Raman spectroscopy, BET analysis, and SEM. The results showed that the composites had increased interlayer spacing and formed a loosely laminated stacked structure. The specific surface area (31.6863 m2/g) and pore volume (0.0104 cm3/g) of the composites increased. The hydrophobic and anticorrosive properties of the composite coatings were investigated and compared to the epoxy coating. The composite coatings (AM@GO/EP) had larger contact angles and smoother surfaces than the epoxy coating (EP). After 30 days of immersion, the value of |Z|0.01 Hz was approximately 1011 Ω cm2, which had changed slightly since initial immersion. Mechanistic analysis shows that the improved corrosion resistance of the composite coatings was due to the high specific surface area of the 2D material, the oxygen-containing groups of GO, the amino groups of APTES@MMT and the synergy between the MMT and the GO nanosheets. Note de contenu : - Materials
- Synthesis of APTES@MMT(AM)
- Synthesis of GO
- Synthesis of AM@GO
- Epoxy composite coating preparation
- Electrochemical measurements
- Structural characterization
- Table 1 : Impedance values of different types of coatings under different immersion daysDOI : https://doi.org/10.1007/s11998-022-00731-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00731-w.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39451
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 1110-1119[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible Preparation of a superhydrophobic coating on 6061Al alloy substrate and its simplified truncated cone model / Zhexin Lv in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 4 (07/2019)
[article]
Titre : Preparation of a superhydrophobic coating on 6061Al alloy substrate and its simplified truncated cone model Type de document : texte imprimé Auteurs : Zhexin Lv, Auteur ; Sirong Yu, Auteur ; Zhou Xue, Auteur ; Liu Di, Auteur ; Yangyan Liu, Auteur ; Yan Zhao, Auteur Année de publication : 2019 Article en page(s) : p. 933-948 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliages
Anticorrosifs
Anticorrosion
Hydrophobie
Métaux -- Revêtements protecteurs
Produits chimiques -- Suppression ou remplacement
Traitement thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Superhydrophobic materials are known for their vast range of applications and properties. We present a simple process to fabricate a superhydrophobic coating on 6061Al alloy via a route with chemical replacement and heat treatment. Through this route, a hierarchical morphology including microparticles and leaf-like microstructures was obtained and, upon modification by stearic acid, the prepared coatings show good water repellency with a water contact angle of 159.2 ± 0.3° and sliding angle of 4.5 ± 1.5°. Systematic studies have been conducted on the coatings fabricated under different processing conditions to obtain the best experimental parameters, and demonstrate the reaction mechanism and the good self-cleaning effect. The 3D simulated coating topography was characterized by Leica DCM 3D in the mesoscopic scale. Based on the topography, the simplified ideal truncated cone model and theoretical equation were obtained. According to the model, a qualitative result was drawn: the higher and sharper the convex structures are, the better is the superhydrophobicity. Furthermore, the presented process can be applied to larger, stable coatings with the controllable wettability for diverse applications. Note de contenu : - EXPERIMENTAL DESIGN : Materials and reagents - Preparation for the superhydrophobic coating on 6061Al alloy substrate - Characterizations and tests
- RESULTS AND DISCUSSION : The as-prepared coating with the superhydrophobicity - Optimization of experimental parameters in chemical replacement - Composition and morphology of the superhydrophobic coating - The simplified truncated cone modelDOI : 10.1007/s11998-018-00168-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-00168-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32851
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Code-barres Cote Support Localisation Section Disponibilité 21127 - Périodique Bibliothèque principale Documentaires Disponible Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination / Zhen Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
[article]
Titre : Preparation of superhydrophobic titanium surface via the combined modification of hierarchical micro/nanopatterning and fluorination Type de document : texte imprimé Auteurs : Zhen Wang, Auteur ; Bing Ren, Auteur Année de publication : 2022 Article en page(s) : p. 967-975 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Chimie des surfaces
Dispositifs médicaux
Fluoroalkylsilane
Hydrophobie
Implants médicaux
Infections nosocomiales
Mouillabilité
Revêtements -- Emploi en thérapeutique
Titane
Traîtements de surfaceIndex. décimale : 667.9 Revêtements et enduits Résumé : Adhesion of bacteria and platelets on blood-contact implants and surgical devices is one of the causes of infections and thrombus. A superhydrophobic surface serving as a protective layer can minimize adhesion and contamination due to the low surface energy. The objective of this paper is to construct a superhydrophobic surface on a titanium implant by a combination of a topological structure and chemical coating. First, a micro/nano hierarchical morphology is obtained by sandblasting, acid-etching, and anodic oxidation. Then, a low surface energy coating material (fluoroalkylsilane, as the example case in this study) is used to modify the surface further. The effects of the morphology of micro and/or nanoscales and corresponding fluorination on the wettability are investigated. The results show that a hierarchical surface with microroughness and nanotubes is successfully constructed, and the contact angle (CA) is 44.9°, indicating good hydrophilicity. Interestingly, after being modified by fluoroalkylsilane, the surface converted from hydrophilic to superhydrophobic with a CA of 151.4°. In contrast, the fluorination modification of single micro or nanofeatures cannot achieve superhydrophobicity, indicating that the micro/nanostructures may show a synergistic effect for an efficient fluorination coating later on. Overall, our results demonstrate the feasibility of achieving a superhydrophobic surface via the micro/nano topological patterning and fluorination modification. The proposed method is expected to enrich the preparation technologies of superhydrophobic titanium surfaces. Note de contenu : - MATERIALS AND METHODS : Anodic oxidation parameter settings - Construction of micro/nano hierarchical structures - Fluoroalkylsilane (FAS) modification - Surface characterization
- RESULTS : Effects of electrolyte and voltage during anodic oxidation - Surface morphology - Chemical composition - Surface wettabilityDOI : https://doi.org/10.1007/s11998-021-00576-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00576-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38090
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Code-barres Cote Support Localisation Section Disponibilité 23605 - Périodique Bibliothèque principale Documentaires Disponible Preparation of transparent ultrahydrophobic silica film by sol–gel process / Guojian Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 1 (01/2011)
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PermalinkProperties evaluation of double silane system compound gel as a protective coating on concrete / Xu Chen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
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