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Recent advances in superwetting materials for separation of oil/water mixtures. | LitMetric

Recent advances in superwetting materials for separation of oil/water mixtures.

Nanoscale

Key Laboratory for Precision & Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, P. R. China.

Published: March 2023

AI Article Synopsis

  • Engineering surfaces that efficiently separate oil from water is crucial for various applications, like treating oily wastewater and managing oil spills.
  • Recent advancements in biomimetics and manufacturing have improved the design of special materials with unique wettability properties for this purpose.
  • The review explores theories of wettability, different separation techniques (filtration, adsorption, etc.), and outlines current challenges and future research directions in developing these separation technologies.

Article Abstract

Engineering surfaces or membranes that allow an efficient oil/water separation is highly desired in a wide spectrum of applications ranging from oily wastewater discharge to offshore oil spill accidents. Recent advances in biomimetics, manufacturing, and characterization techniques have led to remarkable progress in the design of various superwetting materials with special wettability. In spite of exciting progress, formulating a strategy robust enough to guide the design and fabrication of separating surfaces remains a daunting challenge. In this review, we first present an overview of the wettability theory to elucidate how to control the surface morphology and chemistry to regulate oil/water separation. Then, parallel approaches are considered for discussing the separation mechanisms according to different oil/water mixtures, and three separation types were identified including filtration, adsorption and other separation types. Finally, perspectives on the challenges and future research directions in this research area are briefly discussed.

Download full-text PDF

Source
http://dx.doi.org/10.1039/d2nr07088jDOI Listing

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