Superhydrophobic starch-based nanocomposite cryogel for oil removal underwater and magnetically guided oil slick cleanup

被引:21
作者
Wang, Fan
Ma, Rongrong
Tian, Yaoqi [1 ]
机构
[1] Jiangnan Univ, State Key Lab Food Sci & Technol, Wuxi 214122, Jiangsu, Peoples R China
关键词
Starch; Superhydrophobic; Magnetic; Nanoparticles; Oil spill; NANOCELLULOSE AEROGELS; FACILE FABRICATION; CASSAVA STARCH; COATINGS; COMPOSITE; MEMBRANE; CARBON;
D O I
10.1016/j.carbpol.2022.119297
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Low-cost and eco-friendly carbohydrate-based absorbents have attracted great attention for cleaning oil spill that poses a serious threat to the ecosystem. Porous starch-based materials have been proven to have good oil ab-sorption performance, but the hydrophilicity of these materials limits their application in oil spill cleanup. Herein, a novel starch-based superhydrophobic absorbent (HMS-SiO2@MSC) was achieved by introducing nanoparticles into starch cryogel. Fe3O4 and silylated SiO2 nanoparticles endowed the adsorbent with magnetism (saturation magnetization: 4.36 emu/g) and superhydrophobicity (water contact angle: 154.4 degrees), respectively. In addition, the surface chemical composition and microstructure of the adsorbent were investigated in detail. Some crucial properties of HMS-SiO2@MSC were also comprehensively confirmed, including water-repellent, self- cleaning, anti-fouling, and durability. Furthermore, HMS-SiO2@MSC exhibited good practicability of removing oil underwater and magnetically guided cleaning oil slick on the water surface. This work provided a new carbohydrate-based adsorbent, which would broaden the application fields of starch.
引用
收藏
页数:11
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