MoS2-roughened hollow-lumen plant fibers with enhanced oil absorption capacity
A facile dipping strategy was performed for roughening the surface of two plant fibers (CGF, Calotropis gigantea fiber; KF, kapok fiber) via nano-sized MoS 2 to obtain eco-friendly oil-absorbing materials, MoS 2 -CGF and MoS 2 -KF. The results indicated that in addition to the roughened surface topo...
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Veröffentlicht in: | Cellulose (London) 2020-03, Vol.27 (4), p.2267-2278 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A facile dipping strategy was performed for roughening the surface of two plant fibers (CGF,
Calotropis gigantea
fiber; KF, kapok fiber) via nano-sized MoS
2
to obtain eco-friendly oil-absorbing materials, MoS
2
-CGF and MoS
2
-KF. The results indicated that in addition to the roughened surface topography, MoS
2
-CGF and MoS
2
-KF possessed also hydrophobic–oleophilic properties and highly hydrophobic stability to corrosive environments. For twelve selected model oils (including organic solvents), MoS
2
-roughened fibers had excellent absorption capacity, with the value of 25–100 g/g for MoS
2
-CGF and 65–135 g/g for MoS
2
-KF within a few seconds. Furthermore, MoS
2
-CGF and MoS
2
-KF exhibited outstanding oil–water selectivity by using trichloromethane and cyclohexane as the model oils. After ten absorption–desorption cycles, a limited reduction in the re-sorption percentage was observed, demonstrating that MoS
2
-CGF and MoS
2
-KF had good reusability. By combining the advantages of abundant resource, low cost, high efficiency and environmental friendliness, MoS
2
-roughened fibers may be promising as efficient oil sorbents for the removal of oil spills in water.
Graphic abstract |
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ISSN: | 0969-0239 1572-882X |
DOI: | 10.1007/s10570-019-02943-7 |