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Underwater superoleophobic copper mesh coated with block nano protrusion hierarchical structure for efficient oil/water separation.

Authors :
Qi, Xinyu
Gao, Zhuwei
Li, Chengxin
Wang, Shihao
Zou, Xin
He, Lan
Liu, Zhongxin
Source :
Journal of Industrial & Engineering Chemistry; Mar2023, Vol. 119, p450-460, 11p
Publication Year :
2023

Abstract

[Display omitted] Compared with monolayer nanosheet membranes, multilayer nanosheet membranes have low energy consumption and can be mass-produced for industrial applications. Herein, a multi-layer nanostructured membrane, nickel-doped brochantite/Cu(OH) 2 nano protrusion structure coated copper meshes (NBCPCMs), were successfully prepared. Firstly, the surface of the copper mesh was etched by chemical oxidation to form a disordered copper hydroxide nanosheet layer. Secondly, the etched copper mesh surface was coated with nickel-controlled brochantite block-like protrusions by hydrothermal synthesis method, and nickel-doped brochantite/Cu(OH) 2 nanosheets were generated by high pressure. The results showed that NBCPCM-4 had excellent hydrophilic/underwater superoleophobicity, the oil–water separation efficiency of immiscible cyclohexane/water mixture was the highest, about 98.54%, and still had a very high flux (>60 (kL/(h·m<superscript>2</superscript>))) after multiple cycles of separation. In addition to ultra-high separation efficiency, NBCPCM-4 also had super durability. The copper mesh maintained good underwater superoleophobicity in different aqueous solutions. Therefore, NBCPCM-4 is a potential high-efficiency and sustainable oil–water separation membrane material. It is expected that the developed technology is useful for sea transportation and marine environment management, along with other industries. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1226086X
Volume :
119
Database :
Supplemental Index
Journal :
Journal of Industrial & Engineering Chemistry
Publication Type :
Periodical
Accession number :
161441607
Full Text :
https://doi.org/10.1016/j.jiec.2022.11.067