Laser-induced stainless steel mesh for high effective water/oil separation

Micro & nano letters

article

Tianchi Chen¹  Hongtao Liu²  Haifeng Yang¹  Wei Yan²  Wei Zhu²  Hao Liu¹  Kaijin Guo³ 

[1] College of Mechanical & Electrical Engineering, China University of Mining and Technology;School of Materials Science and Engineering, China University of Mining and Technology;Xuzhou Medical College Affiliated Hospital

关键词: wetting;    hydrophobicity;    hydrophilicity;    surface treatment;    laser materials processing;    organic compounds;    stainless steel;    laser-induced stainless steel mesh;    hierarchical microstructures;    hierarchical nanostructures;    laser direct writing technology;    superhydrophilic properties;    underwater superoleophobic properties;    superhydrophobic properties;    1H;    1H;    2H;    2H-perfluorodecyltriisopropoxysilane;    oil density;    oil-water separation efficiency;    wettability;    separation stability;   

DOI  :  10.1049/mnl.2016.0802

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The hierarchical micro/nano structures are successfully obtained on the stainless steel mesh via a simple laser direct writing technology. The as-prepared mesh reveals excellent superhydrophilic/underwater superoleophobic properties or superhydrophobic/superoleophilic properties after 1H, 1H, 2H, 2H-perfluorodecyltriisopropoxysilane modification. According to the oil density, the superhydrophilic/ underwater superoleophobic mesh allows water to permeate and repels the light oil. Its oil/water separation efficiency is as high as 98.5% for the light oil. The superhydrophobic/superoleophilic mesh can be easily wetted by heavy oils while the water will be repelled, which the separation efficiency can reach 98.0% for the heavy oil. Moreover, this special wettability mesh can still maintain high separation efficiency after 20 separation cycles, which indicates the good separation stability.

【 授权许可】

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