Simultaneously spray-assisted assembling reversible superwetting coatings for oil-water separation

Dexin Chen; Zhixin Kang; Wei Li; Fenghua Su

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Simultaneously spray-assisted assembling reversible superwetting coatings for oil-water separation

Separation Science and Engineering | Updated：2026-01-06

- Simultaneously spray-assisted assembling reversible superwetting coatings for oil-water separation
- Chinese Journal of Chemical Engineering Vol. 32, Issue 4, Pages: 144-150(2021)
- Affiliations：
  
  1. Institute of Advanced Wear&Corrosion Resistant and Functional Materials, Jinan University,Guangzhou,China,510632
  2. Shaoguan Research Institute of Jinan University,Shaoguan,China,512027
  3. School of Mechanical and Automotive Engineering, South China University of Technology,Guangzhou,China,510640
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2021
- Accepted：
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Dexin Chen, Zhixin Kang, Wei Li, Fenghua Su. Simultaneously spray-assisted assembling reversible superwetting coatings for oil-water separation[J]. Chinese Journal of Chemical Engineering, 2021, 32(4): 144-150.
DOI：

Dexin Chen, Zhixin Kang, Wei Li, Fenghua Su. Simultaneously spray-assisted assembling reversible superwetting coatings for oil-water separation[J]. Chinese Journal of Chemical Engineering, 2021, 32(4): 144-150. DOI：

摘要

Abstract

Here

superhydrophobic cuprous oxide (Cu

O) with hierarchical micro/nanosized structures was synthesized

via

spray-assisted layer by layer assembling. The as-prepared superhydrophobic meshes with high contact angle (159.6°) and low sliding angle (1°) are covered with Cu

O "coral reef" -like micro/nanosized structures. Interestingly

the superhydrophobic mesh surfaces became superhydrophilic again due to the oxidization of Cu

O to CuO by annealing at a higher temperature (300℃). And the superhydrophobic properties would be recovered by heating at 120℃. Furthermore

the superwetting meshes were applied to design a miniature device to separate light or heavy oil from the water-oil mixtures with excellent separation efficiency. These superwetting surfaces by simultaneously spray-assisted layer by layer assembling technique show the potential application in universal oil-water separation.

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