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Durable LBL microcapsule-based sponges with superhydrophobic/ super-oleophilic and photothermal behaviors for oil-water separation

文献类型： 外文期刊

作者： Yang, Ning 1 ; Yuan, Renqiang 2 ; Li, Weikun 1 ; Tan, Xin 1 ; Liu, Zonghao 1 ; Zhang, Qianli 4 ; Li, Chunyang 5 ; Ge, Liqin 1 ;

作者机构： 1.Southeast Univ, Sch Biol Sci & Med Engn, State Key Lab Digital Med Engn, Nanjing 210096, Peoples R China

2.Nanjing Univ Posts & Telecommun, State Key Lab Organ Elect & Informat Displays, Nanjing 210023, Peoples R China

3.Nanjing Univ Posts & Telecommun, Inst Adv Mat IAM, Jiangsu Key Lab Biosensors, Nanjing 210023, Peoples R China

4.Suzhou Univ Sci & Technol, Sch Chem & Life Sci, Suzhou 215009, Peoples R China

5.Jiangsu Acad Agr Sci, Inst Agroprod Proc, Nanjing 210014, Peoples R China

关键词： Superhydrophobic sponge; Oil-water separation; Combination of microcapsules; Mechanical and chemical durability; Photothermal conversion

期刊名称：SEPARATION AND PURIFICATION TECHNOLOGY （ 影响因子：8.6； 五年影响因子：7.8 ）

ISSN： 1383-5866

年卷期： 2023 年 327 卷

页码：

收录情况： SCI

摘要： Spills of marine oily pollutants and illegal discharges of industrial organic solvents have severely undermined the natural resources and ecological sustainability. Herein, a versatile and durable modified melamine sponge (MS) was fabricated by integrating with multilayered microcapsules (MCs) and chemical vapor deposition of 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES), namely PFDTES@MCs@MS. The combination of giant microcapsules on the sponge structure imparts the rough surface micro-construction, accompanied by the hydrophobic modification, which enabled PFDTES@MCs@MS to exhibit superhydrophobic/super-oleophilic and self-cleaning capabilities. PFDTES@MCs@MS displayed outstanding oil-water mixtures or emulsions separation capabilities with the separation efficiencies more than 99%. Impressively, PFDTES@MCs@MS preserved mechanical and chemical durability in 100 recycle tests or chronic processes under harsh conditions. In addition, PFDTES@MCs@MS exhibited the remarkable uptake capacity of organic solvents or oils, and the adsorption amount of light or heavy oil was barely impacted with squeezing after the 50 times of circulation. Furthermore, the PFDTES@MCs@MS displayed antibacterial performance. Significantly, the PFDTES@MCs@MS showed superior photothermal conversion capability, the temperature of it increased dramatically to approximately 80 degrees C within 180 s under simulated sunlight from room temperature (about 25 celcius), and the flux of separating high-viscosity oils was significantly increased. This study presents a novel oil sorption and separation materials with excellent durability and repeatability, which establishes the foundation for the judicious design of innovative weapons to combat the challenging oil spills.

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