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author:

Chen, H. (Chen, H..) [1] | Wang, F. (Wang, F..) [2] | Fan, H. (Fan, H..) [3] | Hong, R. (Hong, R..) [4] | Li, W. (Li, W..) [5]

Indexed by:

Scopus

Abstract:

A superhydrophobic composite coating was facilely constructed based on MOF (ZIF-8) nanoparticles and organic resin. Hydrophilic ZIF-8 nanoparticles with hydroxyl group were firstly prepared in aqueous media at room temperature, and then modified with low surface energy perfluorooctyltriethoxysilane (POTS) through hydrolytic condensation to give a superhydrophobic paint. Additionally, epoxy resin (EP) was innovatively introduced as adhesive layer to improve the robustness and adhesive force of the superhydrophobic coating. The as-prepared ZIF-8/POTS/EP composite coating showed high water-repellency (water contact angle = 168.2°), mechanical and chemical robustness, and durability that it could maintain the superhydrophobicity after weathering in air for 300 days or immersing in 3.5 wt% NaCl aqueous solution for 60 days. The superhydrophobic composite coating also possessed excellent performance in self-cleaning, corrosion resistance, anti-icing and loading-increasing. Noteworthily, for the corrosion resistance, the ZIF-8/POTS/EP coating could increase the impedance modulus (at 0.01 Hz) of Q235 steel by about 7 orders of magnitude after immersion in 3.5 wt% NaCl aqueous solution for 7 days. We believe that this work can not only promote the effortless and large-scale preparation of superhydrophobic surface and their practical applications in future, but also provide a novel way for applying MOF materials into more fields. © 2020 Elsevier B.V.

Keyword:

Corrosion resistance; Robustness; Self-cleaning; Superhydrophobic composite coating; ZIF-8

Community:

  • [ 1 ] [Chen, H.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 2 ] [Wang, F.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 3 ] [Fan, H.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 4 ] [Hong, R.]College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 5 ] [Li, W.]School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China

Reprint 's Address:

  • [Hong, R.]College of Chemical Engineering, Fuzhou UniversityChina

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Source :

Chemical Engineering Journal

ISSN: 1385-8947

Year: 2020

1 3 . 2 7 3

JCR@2020

1 3 . 4 0 0

JCR@2023

ESI HC Threshold:132

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 202

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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