Preparation and application of zif-8 thin layers

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

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.

Details

Original languageEnglish
Article number4041
JournalApplied Sciences (Switzerland)
Volume11
Issue number9
Publication statusPublished - 1 May 2021
Peer-reviewedYes

Keywords

Keywords

  • Anodic dissolution, Contact angle, Electrochemical synthesis, Liquid infused porous surfaces (LIPS), Metal–organic framework (MOF), Omniphobic surface