Preparation and Application of ZIF-8 Thin Layers

Applied Sciences

Stefan Kaskel¹  Jakob Sablowski²  Simon Unz²  Daria Mikhailova³  Martin Schernikau³  IgnacioGuillermo Gonzalez Martinez³ 

[1] Department of Inorganic Chemistry, Technische Universität Dresden, Bergstraße 66, D-01069 Dresden, Germany;Institute of Process Engineering and Environmental Technology, Technische Universität Dresden, George-Bähr-Straße 3b, D-01062 Dresden, Germany;Leibniz Institute for Solid State and Materials Research (IFW) Dresden e.V., Helmholtzstraße 20, D-01069 Dresden, Germany;

关键词: metal–organic framework (MOF);    electrochemical synthesis;    anodic dissolution;    liquid infused porous surfaces (LIPS);    omniphobic surface;    contact angle;   

DOI  :  10.3390/app11094041

来源: DOAJ

【 摘 要 】

Herein we compare various preparation methods for thin ZIF-8 layers on a Cu substrate for application as a host material for omniphobic lubricant-infused surfaces. Such omniphobic surfaces can be used in thermal engineering applications, for example to achieve dropwise condensation or anti-fouling and anti-icing surface properties. For these applications, a thin, conformal, homogeneous, mechanically and chemically stable coating is essential. In this study, thin ZIF-8 layers were deposited on a Cu substrate by different routes, such as (i) electrochemical anodic deposition on a Zn-covered Cu substrate, (ii) doctor blade technique for preparation of a composite layer containing PVDF binder and ZIF-8, as well as (iii) doctor blade technique for preparation of a two-layer composite on the Cu substrate containing a PVDF-film and a ZIF-8 layer. The morphology and topography of the coatings were compared by using profilometry, XRD, SEM and TEM techniques. After infusion with a perfluorinated oil, the wettability of the surfaces was assessed by contact angle measurements, and advantages of each preparation method were discussed.

【 授权许可】

Unknown