Journal
APPLIED MATERIALS TODAY
Volume 9, Issue -, Pages 551-559Publisher
ELSEVIER
DOI: 10.1016/j.apmt.2017.09.013
Keywords
Superhydrophobicity; Superoleophilicity; MF@MoS2 sponges; Oil-water separation; Water-soluble pollutants removal
Categories
Funding
- National Natural Science Foundation of China [11202178, 11275150, 11435010]
- Natural Science Foundation of Hunan Province [14JJ3082]
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Removal of pollutants from water is an important global challenge for energy conservation and environmental protection. Advanced macro-porous sorbent materials with three-dimensional wettability surfaces have been considered traditional candidates for wastewater treatment. Although the real water environment always co-exists with two pollution sources, the major functions of existing macro-porous materials are limited to either water-insoluble organics separation or water-soluble dyes removal. Bifunctional macro-porous materials for simultaneous oil-water separation and soluble elements removal are currently lacking. Here we report the novel MoS2-coated melamine-formaldehyde(MF@MoS2) sponges with different wettabilities, for example, superhydrophobicity and superhydrophilicity, exhibiting both high selectivity and excellent absorption capacities for a wide range of oils/organic solvents with different densities and water-soluble dyes. The functional MF@MoS2 sponges perform high absorption capacity for different organic solvents up to 66 and 157 times of its own weight respectively, while showing high discoloration efficiency of 98% methyl orange within 10 min. For the first time, we report these functional macro-porous materials used for simultaneous cleaning of oil and soluble pollutants in water, which extended the potential of MoS2 for environmental application. Furthermore, a continuous and simultaneous removal of insoluble oils and soluble dyes in situ from water was achieved by simply applying external pumping on the functional macro-porous MF@MoS2 sponges. (C) 2017 Elsevier Ltd. All rights reserved.
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