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Development of coin-shaped ZIF-7 functionalized superhydrophobic polysulfone composite foams for continuous removal of oily contaminants from water.
- Source :
-
Journal of Hazardous Materials . Jan2022, Vol. 421, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- Development of efficient absorbent materials for oil spillage clean-up and environmental pollution remediation is highly desired but remains a challenge. In this work, superhydrophobic/superoleophilic polysulfone based ZIF-7 composite (SPZ) foams were fabricated via chemical modification of polysulfone and integrating with hydrophobic coin-shaped ZIF-7 particles. The synergistic approaches provided the SPZ foams with high porosity, low density and superhydrophobic/superoleophilic features (θ water =162.3°, θ oil =0°) and outstanding self-cleaning property. The as-prepared SPZ foams exhibited highly selective absorption capacity (up to 3800 wt%) for various kinds of oils and organic solvents. Furthermore, the SPZ foams still maintained 95.2% of its pristine absorption capacity and the θ water remained at 143.6° after ten absorption/distillation cycles. The SPZ foam showed outstanding separation ability towards different types of emulsions with separation efficiency all above 97%. The high oil/water separation efficiency and robust reusability made the SPZ foams promising absorbent in dealing with practical oil spills. [Display omitted] • Novel superhydrophobic polysulfone composite foams was successfully fabricated. • Coin-shaped ZIF-7 particles were synthesized and investigated for the first time. • The oil-absorption capability of the foams was systematically investigated. • The foams exhibited excellent oil/water separation performance and recyclability. • The foams could effectively separate different surfactant-stabilized emulsions. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03043894
- Volume :
- 421
- Database :
- Academic Search Index
- Journal :
- Journal of Hazardous Materials
- Publication Type :
- Academic Journal
- Accession number :
- 152950587
- Full Text :
- https://doi.org/10.1016/j.jhazmat.2021.126788