期刊
APPLIED SURFACE SCIENCE
卷 473, 期 -, 页码 1049-1061出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.12.215
关键词
Melamine sponge; Reduced graphene oxide; Nanocomposite; Hydrophobicity; Oil-water separation; Antibacterial performance
类别
资金
- National Key Research and Development Program [2016YFB0300700, 2016YFB0300704]
- Natural Science Foundation of Shanghai [17ZR1440900]
- Natural Science Foundation of China [51602195, 51202142, 51202144]
Modifying the commercial melamine sponge (MS) that intrinsically possesses highly porous open-cell structure with graphene oxide (GO) or GO-based nanocomposites (NCs) is a facile, effective, and low-cost route to fabricate three-dimensional (3D) porous materials with multifunctionality. Herein, we fabricated two types of 3D MSs that were separately functionalized by the reduced GO (RGO) sheets and Ag/RGO NC through combined methods of chemical reduction and immersion process. The simple immersion process brought out the transition of superhydrophilic MS to highly hydrophobic RGO-MS and Ag/RGO-MS. Due to the unique surface topography and high porosity, the RGO-MS exhibited remarkable absorption capacity of 41-91 times its own weight for a wide range of oils and organic solvents. Both the RGO-MS and Ag/RGO-MS showed excellent oil-water separation efficiencies. The Ag/RGO-MS not only exhibited outstanding absorption capacity and recyclability, but also possessed ideal antibacterial performance towards bacteria of Staphylococcus sciuri, Shewanella MR-1, Pseudoalteromonas lipolytica, and Vibrio natriegens. The Ag/RGO-MS featured with hydrophobicity and antibacterial activity is a promising candidate for potential applications in oil-spill disposal and water disinfection. This study provides an effective strategy for designing and fabricating the 3D porous materials with novel functionalities.
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