Assembling mixed carboxylic acid molecules on hierarchical structured aluminum substrates for the fabrication of superoleophobic surfaces with controlled oil adhesion

Zhongjun Cheng, Hua Lai, Ying Du, Rui Hou, Chong Li, Naiqing Zhang, Kening Sun*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Controlling oil adhesion on the superoleophobic surfaces is very important in both fundamental research and practical applications. Herein, we report a new method through modification of mixed carboxylic acid (CH3(CH2)6COOH and CF3(CF2)6COOH) molecules on hierarchical structured aluminum substrates toward the fabrication of superoleophobic surfaces with tunable adhesion. The oil adhesion can be controlled by changing the concentration of CF3(CF2)6COOH (xF) in the modified solution. Detailed research indicates that the tunable effect is ascribed to the combined effect of the surface chemistry variation and the hierarchical structures on the substrates. Furthermore, we also demonstrate an application of our surfaces in a droplet-based microreactor. The results reported here can not only provide a new idea for fabrication of superoleophobic surfaces with tunable adhesion but can also potentially be used in many applications, such as microfluidic devices and chemical microreactors.

Original languageEnglish
Pages (from-to)151-157
Number of pages7
JournalChemPlusChem
Volume80
Issue number1
DOIs
Publication statusPublished - Jan 2015
Externally publishedYes

Keywords

  • Aluminum
  • Carboxylic acids
  • Nanostructures
  • Superoleophobic surfaces
  • Surface chemistry

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