Stable superhydrophobic coatings from thiol-ligand nanocrystals and their application in oil/water separation

J. Li, L. Shi, Y. Chen, Y. Zhang, Z. Guo, B.-L. Su, W. Liu

Research output: Contribution to journalArticle

Abstract

Stable superhydrophobic coatings were successfully achieved from thiol-ligand nanocrystals. Nanocrystals included VIII and IB metals and oxide nanoparticles, such as Fe, Co, Ni, Cu and Ag. We present a simple and available method that facilitates the synthesis of superhydrophobic textiles and sponges, in which the interaction between the nanocrystals and thiol plays a significant role in the formation of a special wetting surface. Meanwhile, the superhydrophobic textiles could also be endowed with new functionalities. For example, textiles with Fe O nanocoatings possess magnetic properties, and Ag nanocrystals provide an antibacterial effect. If perfluoroalkyl thiol was used to replace alkyl thiol, the as-modified surfaces became oleophobic from superoleophilic. The proposed strategy was fit for various nanoparticles from as-established methods, including the preparation in different polar solvents, and the usage of surfactants as capping agents. As-prepared superhydrophobic nanocoatings show good durability towards hot water, surfactant aqueous solutions, and ultrasonic treatment in nonpolar solvents. The superhydrophobic and superoleophilic nanocoatings were effectively used for application in oil/water separation.
Original languageEnglish
Pages (from-to)9774-9781
Number of pages8
JournalJournal of Materials Chemistry
Volume22
Issue number19
DOIs
Publication statusPublished - 21 May 2012

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Sulfhydryl Compounds
Nanocrystals
Oils
Ligands
Coatings
Textiles
Water
Surface-Active Agents
Surface active agents
Nanoparticles
Beam plasma interactions
Oxides
Wetting
Magnetic properties
Durability
Ultrasonics
Metals

Cite this

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abstract = "Stable superhydrophobic coatings were successfully achieved from thiol-ligand nanocrystals. Nanocrystals included VIII and IB metals and oxide nanoparticles, such as Fe, Co, Ni, Cu and Ag. We present a simple and available method that facilitates the synthesis of superhydrophobic textiles and sponges, in which the interaction between the nanocrystals and thiol plays a significant role in the formation of a special wetting surface. Meanwhile, the superhydrophobic textiles could also be endowed with new functionalities. For example, textiles with Fe O nanocoatings possess magnetic properties, and Ag nanocrystals provide an antibacterial effect. If perfluoroalkyl thiol was used to replace alkyl thiol, the as-modified surfaces became oleophobic from superoleophilic. The proposed strategy was fit for various nanoparticles from as-established methods, including the preparation in different polar solvents, and the usage of surfactants as capping agents. As-prepared superhydrophobic nanocoatings show good durability towards hot water, surfactant aqueous solutions, and ultrasonic treatment in nonpolar solvents. The superhydrophobic and superoleophilic nanocoatings were effectively used for application in oil/water separation.",
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Stable superhydrophobic coatings from thiol-ligand nanocrystals and their application in oil/water separation. / Li, J.; Shi, L.; Chen, Y.; Zhang, Y.; Guo, Z.; Su, B.-L.; Liu, W.

In: Journal of Materials Chemistry, Vol. 22, No. 19, 21.05.2012, p. 9774-9781.

Research output: Contribution to journalArticle

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