Ultrahigh Throughput and Efficient Separation of Oil/Water Mixtures Using Superhydrophilic Multi-Scale CuBTC-Coated Meshes

Chao Wua, Yao Zhanga, Qi Zhao (Lead / Corresponding author), Yun Li, Baoquan Zhang (Lead / Corresponding author)

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)
48 Downloads (Pure)

Abstract

High-flux and oil-resistant mesh for oil/water separation is substantially needed due to frequent oil spill accidents. However, the acquirement of high-flux meshes without sacrificing intrusion pressure is a challenge. Here, a multi-scale CuBTC-coated copper mesh was prepared via a novel stepwise liquid-phase epitaxial (LPE) procedure and secondary growth. On the basis of the uniform CuBTC seed layer on the surface of copper mesh via the LPE method, the micro-scale CuBTC coating was obtained by secondary growth. The nanosized CuBTC humps were further fabricated on the surface of micro-scale CuBTC crystals to form the multi-scale structure. The as-prepared multi-scale CuBTC-coated mesh possessed superhydrophilicity and underwater superoleophobicity. The stabilities and anti-fouling behavior of the as-prepared CuBTC-coated mesh were investigated. In addition to high oil/water separation efficiency (over 99%), the multi-scale CuBTC-coated mesh exhibited an ultrahigh permeation flux (148.3 L·m −2·s −1) with a satisfactory oil intrusion pressure (2.2 kPa), demonstrating its application potential for quick oil-spill cleanup.

Original languageEnglish
Article number119802
Number of pages8
JournalSeparation and Purification Technology
Volume279
Early online date25 Sept 2021
DOIs
Publication statusPublished - 15 Dec 2021

Keywords

  • CuBTC
  • Liquid-phase epitaxial
  • Multi-scale
  • Oil/water separation
  • Superhydrophilicity

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

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