Deposition of Au and ZnO nanoparticles from concentrated colloidal dispersions in ethanol on glass, polyethylene terephthalate, polystyrene and silicone substrates for manufacturing simple and combined coatings / Vladimir Tatarchuk in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 1 (01/2021) . - p. 205-228 Titre : Deposition of Au and ZnO nanoparticles from concentrated colloidal dispersions in ethanol on glass, polyethylene terephthalate, polystyrene and silicone substrates for manufacturing simple and combined coatings Type de document : texte imprimé Auteurs : Vladimir Tatarchuk, Auteur ; Irina Druzhinina, Auteur ; Evgeny Maksimovskii, Auteur ; Sergei Gromilov, Auteur Année de publication : 2021 Article en page(s) : p. 205-228 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Colloides Composites Dispersions et suspensions Nanoparticules Or Oxyde de zinc Polyéthylène téréphtalate Polystyrène Revêtements Revêtements multicouches Semiconducteurs Index. décimale : 667.9 Revêtements et enduits Résumé : The deposition of coatings of Au and ZnO nanoparticles (NPs) on glass, semiconductor silicon, polyethylene terephthalate, and polystyrene substrates was studied. Deposition was carried out using relatively concentrated dispersions of particles in ethanol (approximately 5–10 mM Au, ZnO), which showed limited time resistance to coagulation and sedimentation, but returned to their original dispersed state by ultrasonic treatment before each cycle of deposition of NPs. The NPs of Au and ZnO were stabilized by abietate and acetate ions, respectively. Simple coatings from Au or ZnO NPs and a combined coating from a mixture of Au and ZnO NPs, as well as two-layer combined coatings with alternating layers of Au/ZnO and ZnO/Au NPs, were obtained by drop casting and the proposed method of deposition from the capillary layer of the dispersion with the use of a linker. The formation of coatings on transparent substrates was studied by means of UV–Vis spectroscopy. Coatings were characterized by SEM, EDX, XRD, PL, UV–Vis and surface resistance methods. The effect of heat treatment on coatings characteristics was tested. Note de contenu : - EXPERIMENTAL : Materials - Syntheses - Substrate treatment - Coating deposition methods - Study methods - RESULTS AND DISCUSSION : Coagulation/sedimentation and regeneration of dispersions - Formation of coatings by DCLD - Formation of coatings by DC - Morphology and composition - Optical and electrical characteristics - Table 1 : Samples and codes - Table 2 : Parameters of linear dependences during the formation of two-sided coatings by the DLCD method - Table 3 : Parameters of linear dependences during the formation of one-sided two-layer coatings by the DC method - Table 4 : The effect of heat treatment on the size of gold crystallites and on the surface resistance of coatings - Table 5 : EDX results for coatings on glass before and after heating at 380°C DOI : https://doi.org/10.1007/s11998-020-00397-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00397-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35364 [article]

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