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.
|Colloids and Surfaces A: Physicochemical and Engineering Aspects
|Early online date
|7 May 2022
|Published - 5 Sept 2022
Bibliographical noteFunding 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 .
- Acid-base resistance properties
- Anthurium andraeanum-like attapulgite
- Oil spill recovery
- Stainless steel mesh
- Underwater superoleophobic