材料科学
接触角
涂层
吸附
淀粉
化学工程
纳米颗粒
变性淀粉
多孔性
生物污染
润湿
复合材料
结垢
纳米技术
有机化学
化学
膜
生物化学
工程类
作者
Fan Wang,Rongrong Ma,Jinling Zhan,Wenshuo Shi,Yuanyuan Zhu,Yaoqi Tian
标识
DOI:10.1016/j.seppur.2022.120872
摘要
Development of novel superhydrophobic adsorbents to remove oil spills that threaten aquatic ecosystems is necessary. To realize smart superhydrophobic starch-based adsorbents and reduce the use of metal-oxide particles in magnetic superhydrophobic coating, silylated porous starch/Fe3O4 hybrid micro/nanoparticles (SPF) were developed, and then innovatively introduced onto the surface of starch cryogel ([email protected]) by spray-coating technique. The surface chemical composition and hierarchical micro/nanostructures, which contribute to the high water contact angle (>152.0°) and low sliding angle (<9.0°) of the as-prepared material, were characterized in detail. [email protected] possessed excellent water repellent, self-cleaning, and anti-fouling properties, as well as good mechanical and chemical durability. [email protected] can be remotely propelled by a magnet on the surface of water to flexibly clean discrete oil patches. Moreover, an internal/external collaborative oil absorption behavior was also found unexpectedly in the absorbent. This study provides a strategy for the design of novel adsorbents that could be applied to tackle discrete oil contaminates over the ocean.
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