Open AccessLaser‐induced stainless steel mesh for high effective water/oil separation
Author(s) -
Chen Tianchi,
Liu Hongtao,
Yang Haifeng,
Yan Wei,
Zhu Wei,
Liu Hao,
Guo Kaijin
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0802
Subject(s) - superhydrophilicity , materials science , wetting , underwater , light crude oil , permeation , separation (statistics) , laser , oil spill , composite material , chemical engineering , petroleum engineering , optics , computer science , oceanography , chemistry , physics , organic chemistry , engineering , machine learning , membrane , biology , genetics , geology
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.