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Gewählte Publikation:

Gao, RN; Xiao, SL; Gan, WT; Liu, Q; Amer, H; Rosenau, T; Li, J; Lu, Y.
(2018): Mussel Adhesive-Inspired Design of Superhydrophobic Nanofibrillated Cellulose Aerogels for Oil/Water Separation
ACS SUSTAIN CHEM ENG. 2018; 6(7): 9047-9055. FullText FullText_BOKU

Abstract:
Inspiration from biomimetics-the chemistry of mussel adhesives-was taken for imparting superhydrophobic properties to nanofibrillated cellulose (NFC) matrices. A polydopamine (PDA) surface coating was introduced, acting as an anchor between the NFC scaffold and octadecylamine (ODA): PDA is coated onto the NFC scaffolds by its adhesive properties and the ODA is successfully attached to the PDA by a Schiff base reaction. The ultralow density of 6.04 mg/cm(3) combined with the high contact angle of 152.5 degrees endows the composite aerogel with superb buoyancy and excellent oil/water separation selectivity. Oil can be rapidly absorbed from a mixture of oil and water. In addition, the modified aerogel can take up a wide range of organic solvents, with the maximum absorption capacity reaching up to 176 g/g, depending on the density of the liquids. The novel superhydrophobic aerogel shows great potential as an adsorber for oil and solvent spills and as an oil-water separator.
Autor/innen der BOKU Wien:
Amer Hassan Mohamed
Rosenau Thomas
BOKU Gendermonitor:


Find related publications in this database (Keywords)
Nanofibrillated cellulose
Polydopamine
Octadecylamine
Aerogel
Superhydrophobic
Oil absorption


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