Dual-bionic superwetting gears with liquid directional steering for oil-water separation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

4 Scopus Citations
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Author(s)

  • Zhuoxing Liu
  • Zidong Zhan
  • Tao Shen
  • Ning Li
  • Chengqi Zhang
  • And 5 others
  • Cunlong Yu
  • Chuxin Li
  • Yifan Si
  • Lei Jiang
  • Zhichao Dong

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number4128
Journal / PublicationNature Communications
Volume14
Online published12 Jul 2023
Publication statusPublished - 2023

Link(s)

Abstract

Developing an effective and sustainable method for separating and purifying oily wastewater is a significant challenge. Conventional separation membrane and sponge systems are limited in their long-term usage due to weak antifouling abilities and poor processing capacity for systems with multiple oils. In this study, we present a dual-bionic superwetting gears overflow system with liquid steering abilities, which enables the separation of oil-in-water emulsions into pure phases. This is achieved through the synergistic effect of surface superwettability and complementary topological structures. By applying the surface energy matching principle, water and oil in the mixture rapidly and continuously spread on preferential gear surfaces, forming distinct liquid films that repel each other. The topological structures of the gears facilitate the overflow and rapid transfer of the liquid films, resulting in a high separation flux with the assistance of rotational motion. Importantly, this separation model mitigates the decrease in separation flux caused by fouling and maintains a consistently high separation efficiency for multiple oils with varying densities and surface tensions. © The Author(s) 2023.

Research Area(s)

Citation Format(s)

Dual-bionic superwetting gears with liquid directional steering for oil-water separation. / Liu, Zhuoxing; Zhan, Zidong; Shen, Tao et al.
In: Nature Communications, Vol. 14, 4128, 2023.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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