Deposition of Au and ZnO nanoparticles from concentrated colloidal dispersions in ethanol on glass, polyethylene terepht
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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 , Irina Druzhinina, Evgeny Maksimovskii, Sergei Gromilov
American Coatings Association 2020 Abstract 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. Keywords Gold nanoparticles, Zinc oxide nanoparticles, Simple and composite coatings
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11998-020-00397-2) contains supplementary material, which is available to authorized users. V. Tatarchuk (&), I. Druzhinina, E. Maksimovskii, S. Gromilov Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, Russia630090 e-mail: [email protected]
Introduction Coatings obtained by the deposition of nanoparticles (NPs) of inorganic compounds on various substrates are of considerable interest as objects of research in the field of nanoscience and nanotechnology. This interest is due to the unique individual properties of NPs themselves and collective characteristics of their 2D– 3D structured ensembles forming coatings.1,2 This relates to the full extent to the coatings composed of Au and ZnO NPs, which are, in view of the properties of the particles of Au,3,4 ZnO5,6 and their composites,7–9 promising as the new materials for electronics, optoelectronics, photovoltaics, sensing, and catalysis.5,10–13 Flexible and transparent coatings and substrates are of special importance for the developing flexible and transparent electronics.14–19 An easy and convenient approach to obtain the coatings composed of NPs is the bottom-up approach, with the use of the dispersions of NPs, and such methods of particle deposition on substrates as drop casting, dip coating, spin coating, spray coating, doctor blading, LangmuirBlodjet, and Langmuir-Schaef
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