Novel reusable porous polyimide fibers for hot-oil adsorption
| Autor: | Yongqiang Guo, Junwei Gu, Mingtao Qiao, Qiuyu Zhang, Lidong Tian, Xiaowei He, Chongyin Zhang |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
Materials science business.product_category Health Toxicology and Mutagenesis Oil refinery Sorption 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Pollution Electrospinning 0104 chemical sciences Adsorption Petrochemical Chemical engineering Nanofiber Polymer chemistry Environmental Chemistry Thermal stability 0210 nano-technology business Waste Management and Disposal Motor oil |
| Zdroj: | Journal of Hazardous Materials. 340:67-76 |
| ISSN: | 0304-3894 |
| Popis: | The development of oil sorbents with high thermal stability, adsorption capacity, reusability and recoverability is of great significance for hot oil leakage protection, especially for oil spillage of oil refinery, petrochemical industry and cars. In our work, highly efficient hot oil adsorption of polyimide (PI) fibers with excellent thermal stability was successfully prepared by a facile electrospinning method followed by post-treatment. The corresponding morphologies, structures and oil adsorption properties of as-prepared PI fibers at different temperatures were analyzed and characterized. Results showed that PI fibers presented a stable morphology and pore structure at 200 °C. The oil adsorption capacity of porous PI fibers for hot motor oil (200 °C) was about 57.4 g g −1 , higher than that of PI fibers (32.7 g g −1 ) with non-porous structure for the motor oil at room temperature. Even after ten adsorption cycles, porous PI fibers still maintained a comparable oil sorption capacity (oil retention of 4.2%). The obtained porous PI fibers exhibited excellent hot oil adsorption capacity, reusability and recoverability, which would broaden the application of electrospun fibers in oil spill cleanup and further provide a versatile platform for exploring the technologies of nanofibers in hot oil adsorption field. |
| Databáze: | OpenAIRE |
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