Superlyophobic graphene oxide/polydopamine coating under liquid system for liquid/liquid separation, dye removal, and anti-corrosion

被引：33
作者：
Zhu, Xiaotao [1 ]
Gao, Zhongshuai [1 ]
Li, Fangchao [1 ]
Miao, Gan [1 ]
Xu, Ting [1 ]
Miao, Xiao [2 ]
Song, Yuanming [1 ]
Li, Xiangming [1 ]
Ren, Guina [1 ]
机构：
[1] Yantai Univ, Sch Environm & Mat Engn, Yantai 264405, Peoples R China
[2] Liaocheng Univ, Sch Phys Sci & Informat Technol, Shandong Key Lab Optic Commun Sci & Technol, Liaocheng 252000, Shandong, Peoples R China
来源：
CARBON | 2022年 / 190卷
关键词：
Underwater superoleophobicity; Underoil superhydrophobicity; Superlyophobic surfaces under liquid; Dye removal; Liquid; liquid separation; PVDF MEMBRANES; WATER; FABRICATION; STRATEGY; SURFACE; COPPER;
D O I：
10.1016/j.carbon.2022.01.018
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
It is highly desirable to develop superlyophobic surfaces under liquid system that can act as a versatile platform for separation of both oil/water and oil/oil mixtures and removing dye from water, but it is still hard to achieve. Herein, a graphene oxide/polydopamine (GO/PDA) coating with superlyophobicity under liquid system was fabricated through the self-polymerization of dopamine anchored on the GO sheet surface. The obtained GO/PDA coating possessed both under-water superoleophobicity and under-oil superhydrophobicity. Utilizing its dual superlyophobicity under an oil/water system, the GO/PDA coated fabric was applied to on-demand oil/water separation. Amazingly, the GO/PDA coated fabric exhibited dual superoleophobicity under an immiscible oil/oil system, which allowed it to separate oil/oil mixtures effectively. Due to the water affinity, layered texture, and absorption effect of the GO/PDA coating, the GO/PDA coated fabric can be served as a filtration module for removing dye from water efficiently. Moreover, the GO/PDA coating could also serve as a barrier to protect metal against corrosion. (c) 2022 Elsevier Ltd. All rights reserved.
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页码：329 / 336
页数：8
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