TY - JOUR
T1 - Multifunctional oil-water and immiscible organic liquid separation by micropore arrayed Ti foil
AU - Wu, Sizhu
AU - Li, Chuanzong
AU - Jiao, Yunlong
AU - Lv, Xiaodong
AU - Hu, Zhijia
AU - Li, Guoqiang
AU - Li, Jiawen
AU - Hu, Yanlei
AU - Zhang, Jingjing
AU - Wei, Pengfei
AU - Wu, Dong
PY - 2018/10/15
Y1 - 2018/10/15
N2 -
In this work a multifunctional micropore array (size from 5 to 42 μm) was produced by using one-step femtosecond laser microdrilling for oil-water and oil-oil separation. This novel method has many advantages, such as high precision (size error is less than 1 μm), simple operation (one step), extensible function (even complex microstructures) just to name a few. The prepared foil exhibited superhydrophilic and underwater superoleophobic properties, which can be used to separate the light oil (C
8
H
18
) and water mixtures. After heating in dark environment 0.5 h, the prepared foil showed superhydrophobic and underwater superoleophilic properties, and can be used to separate the heavy oil (C
2
H
4
Cl
2
) and water mixtures. In addition, the heated sample also showed robust ability to separate the immiscible organic liquid mixtures (formamide and C
2
H
4
Cl
2
), exhibiting multifunctional applications. Interestingly, the heated samples would recover its original superhydrophilicity after UV irradiation in ethanol for 1 h. The samples don't contain any fluorinated compounds and display environmental stability even after sonic cleaning and scratch. This work will provide a new insight into the design of intelligent devices for oil/water mixtures separation, organic liquid mixtures separation, and water droplet manipulation.
AB -
In this work a multifunctional micropore array (size from 5 to 42 μm) was produced by using one-step femtosecond laser microdrilling for oil-water and oil-oil separation. This novel method has many advantages, such as high precision (size error is less than 1 μm), simple operation (one step), extensible function (even complex microstructures) just to name a few. The prepared foil exhibited superhydrophilic and underwater superoleophobic properties, which can be used to separate the light oil (C
8
H
18
) and water mixtures. After heating in dark environment 0.5 h, the prepared foil showed superhydrophobic and underwater superoleophilic properties, and can be used to separate the heavy oil (C
2
H
4
Cl
2
) and water mixtures. In addition, the heated sample also showed robust ability to separate the immiscible organic liquid mixtures (formamide and C
2
H
4
Cl
2
), exhibiting multifunctional applications. Interestingly, the heated samples would recover its original superhydrophilicity after UV irradiation in ethanol for 1 h. The samples don't contain any fluorinated compounds and display environmental stability even after sonic cleaning and scratch. This work will provide a new insight into the design of intelligent devices for oil/water mixtures separation, organic liquid mixtures separation, and water droplet manipulation.
KW - Femtosecond lasers
KW - Oil/water mixtures separation
KW - Organic liquid mixtures separation
KW - Superhydrophilic
KW - Underwater superoleophobic
UR - http://www.scopus.com/inward/record.url?scp=85047643675&partnerID=8YFLogxK
UR - https://www.sciencedirect.com/science/article/pii/S0169433218315083?via%3Dihub
U2 - 10.1016/j.apsusc.2018.05.187
DO - 10.1016/j.apsusc.2018.05.187
M3 - Article
AN - SCOPUS:85047643675
VL - 455
SP - 221
EP - 226
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -