Underwater superoleophobic mesh with robust Anthurium andraeanum-like attapulgite coating layer for effective oil spill recovery

Hengyang Mao, Kai Qiu, Shouyong Zhou*, Jiaming Wang, Mengting Li, Shuo Shi, Meisheng Li, Ailian Xue, Yijiang Zhao, Qi Zhang, Zhentao Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

It is highly desired to develop an efficient and stable approach to recover water from oil-water mixtures. In this work, we reported the facile fabrication of superhydrophilic and underwater superoleophobic membranes by coating a layer of Anthurium andraeanum-like attapulgite (ARATP) on commercially available wire meshes via sintering. The ARATP was obtained through anchoring nano-Fe3O4 on attapulgite (ATP), and its micro nano-structures can be adjusted by varying Fe3O4 content. Molecular dynamic simulations revealed the benefits of Fe3O4 in constructing superwetting coating layer with oil droplet repulsion larger than 227 KJ·mol−1. The membrane exhibited underwater superoleophobicity (with underwater oil contact angle at 157°) and was proven to treat various oil-water mixtures effectively (with a water permeation flux above 3249 L·m−2·h−1 and oil content in filtrate less than 2 mg·L−1). Furthermore, the chemical, mechanical stability and easy-cleaning property of the as-prepared membrane was demonstrated by different tests.

Original languageEnglish
Article number129184
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume648
Early online date7 May 2022
DOIs
Publication statusE-pub ahead of print - 7 May 2022

Bibliographical note

Funding Information:
The authors are grateful for the financial support of the National Natural Science Foundation of China (No. 21978109 , 22111530109 ), Natural Science Foundation of the Jiangsu Higher Education Institutions of China ( 19KJA430011 , 21KJB530004 ), International Exchanges 2020 Cost Share ( IEC\NSFC\201014 ), and Jiangsu Qing Lan Project .

Keywords

  • Acid-base resistance properties
  • Anthurium andraeanum-like attapulgite
  • Oil spill recovery
  • Stainless steel mesh
  • Underwater superoleophobic

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