Superhydrophobic MoS2-based multifunctional sponge for recovery and detection of spilled oil
| Autor: | Jae-Hoon Hwang, Mashiyat Sumaiya Shawkat, Dwight Davis, Sang Sub Han, Yeonwoong Jung, Woo Hyoung Lee, Tae-Jun Ko, Kelsey L. Rodriguez, Kyu Hwan Oh |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Sorbent biology Polydimethylsiloxane General Physics and Astronomy Electrically conductive 02 engineering and technology 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Contact angle chemistry.chemical_compound Sponge Vegetable oil chemistry Chemical engineering 0103 physical sciences Oil spill General Materials Science 0210 nano-technology Molybdenum disulfide |
| Zdroj: | Current Applied Physics. 20:344-351 |
| ISSN: | 1567-1739 |
| Popis: | Oil spills are a major threat to the marine ecosystem, requiring immediate solutions to remove spilled oil from oceanic environments. In this study, we report a superhydrophobic molybdenum disulfide (MoS2) coated polydimethylsiloxane (PDMS) sponge and demonstrate its high proficiency in spilled oil recovery and oil spill detection based on oil-water separation ability. This novel oil sorbent is fabricated by a simple dip-coating to incorporate MoS2 flakes into PDMS sponge. The optimized MoS2-sponge displays a water contact angle of >152°, demonstrating excellent superhydrophobicity and high oil absorption (>97 wt%) for a variety of oils, including vegetable oil and fuel waste. Moreover, the material retains excellent oil absorption capability upon repetitive compression cycles. The versatility of this novel sorbent has been extended for the real-time spontaneous detection of oils by taking advantage of electrically conductive MoS2 layers. |
| Databáze: | OpenAIRE |
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