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Superhydrophilic and Underwater Superoleophobic Poly(propylene) Nonwoven Coated with TiO 2 by Atomic Layer Deposition
Author(s) -
Li Chen,
Ren Lipei,
Liu Xin,
Zhang Chunhua,
Chen Dongzhi,
Xu Weilin,
Qin Yong
Publication year - 2021
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.202001485
Subject(s) - superhydrophilicity , materials science , coating , chemical engineering , atomic layer deposition , contact angle , layer (electronics) , underwater , nanotechnology , composite material , engineering , oceanography , geology
To develop an effective and convenient solution for underwater repelling oil and cleaning up oily water, TiO 2 nano‐coating is deposited on the surface of poly(propylene) nonwoven (PPN) by atomic layer deposition (ALD). There is no evident change in the morphologies comparing ALD‐modified PPN with PPN except for thickness. For oils of different densities, such as 1,2‐dichloroethane, methylene chloride, chloroform, carbon tetrachloride, n ‐hexane, and petroleum ether, the underwater oil contact angle and underwater oil sliding angle of ALD‐modified PPN range from 152.25° to 156.19° and 5.63° to 8.80°, respectively, exhibiting superior superhydrophilicity and underwater superoleophobicity. Notably, ALD‐modified PPN shows a high chemical stability in different solutions, such as acid, alkali, salt, and polar solvent, which even can slightly improve the underwater superoleophobicity of TiO 2 nano‐coating. The excellent underwater anti‐oil property, self‐cleaning property, robust chemical resistance, and easily scaled‐up preparation process of TiO 2 ‐coated PPN suggest great potential for practical applications in the energy, environmental protection, marine anti‐fouling, and microflow control fields.