Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 423, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.127064
Keywords
Melamine sponge; Superhydrophobic; Multi-state oil/water separation; Oil recovery; Photothermal
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Funding
- National Natural Science Foundation of China [51978384]
- Major Technological Innovation En-gineering Project of Shandong Province [2018CXGC1010, 2020CXGC011204]
- Shandong Province postdoctoral innovative talents support program [SDBX2020002]
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Developing environmentally friendly and low-cost materials with high selectivity for oil separation has important ecological significance; the developed CPMF200 and CPMF400 sponges exhibit excellent properties for efficient absorption and separation of multi-state oils.
In view of the complexity and diversity of multi-state oils, the development of green and low-cost materials with high selectivity to oils has important ecological significance in the polluted water treatment. Herein, a simple method was proposed to develop large-scale production of superhydrophobic sponges (CPMF200 sponges) for high-efficiency oil/water separation under different complex environments. The as-prepared CPMF200 sponges possessed many superior properties, including high roughness, well-developed porosity, good thermal stability, excellent chemical stability, and superhydrophobic properties (water contact angle is 152 degrees), which is conducive to high oil adsorption capacity (up to 70-179 times of its own weight) and oil-water separation. More importantly, the CPMF400 sponge has an excellent photothermal conversion capability to improve the fluidity of high viscosity oil for oil recovery. Based on a simple synthesis method, it exhibits high-efficiency absorption of multistate oils and excellent oil-water separation performance and strongly proves their application prospects in treating oily wastewater.
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