Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/67318
Title: Bioinspired superhydrophobic Fe3O4@Polydopamine@Ag hybrid nanoparticles for liquid marble and oil spill
Authors: Wang, B
Liu, Y
Zhang, Y
Guo, Z
Zhang, H
Xin, JH 
Zhang, L
Issue Date: 2015
Source: Advanced materials interfaces, 2015, v. 2, no. 13, 1500234, p. 1-10
Abstract: Fe3O4 nanoparticles (NPs) with Ag NPs evenly distributed on the surface are fabricated by using polydopamine (PDA) as the intermediate layer. Silanization and thiol chemistry are used to firmly combine the Fe3O4@ PDA core and outer surface Ag NPs. The spherical and hybrid nanoparticles are termed Fe3O4@PDA@Ag NPs, which possess a core–shell and hierarchical structure. After surface modification with 1H,1H,2H,2H-perfluorodecanethiol, the hybrid Fe3O4@PDA@Ag NPs become highly hydrophobic. Slight rolling of a water droplet on the as-prepared NPs causes the formation of a “liquid marble”, which is capable of performing remote actuation on various solid surfaces, such as glass sheet, paper, plastic, textile, and ceramic, and at the liquid–air interface using a permanent magnet. Liquid marbles with self-assembled NPs on the liquid surface have potential to act as a miniaturized reactor for manipulation of inner liquid droplet with high positioning precision. In addition, the Fe3O4@PDA@Ag NPs are multifunctional and can be applied for oil/water separation and antibacterial purpose.
Publisher: Wiley-VCH
Journal: Advanced materials interfaces 
ISSN: 2196-7350
DOI: 10.1002/admi.201500234
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