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Fabrication of Cu species functionalized cotton fabric with oil/water separating reusability by in-situ reduction process
Surface & Coatings Technology ( IF 5.4 ) Pub Date : 2020-01-25 , DOI: 10.1016/j.surfcoat.2020.125405
Weijing Zhao , Xinyan Xiao , Guangming Pan , Zhihao Ye

Cu species (Cu/Cu2O/CuO NPs) functionalized fabric (Cu-fabric) with superhydrophobicity was fabricated through a simple in-situ reduction from Cu(OH)2-coated-fabric and an immersion process in n-octadecathiol (ODT) solution, in which cotton fabric served as bio-support material to immobilize Cu2+ in the presence of NH3·H2O. The surface morphology, elements composition, elements valance state and functional groups were detected by SEM, EDS, XPS and ATR-FTIR, respectively, and a formation mechanism of the Cu-fabric was proposed. The as-prepared Cu-fabric showed superhydrophobicity to deionized water, with a water contact angle (WCA) about 153.5 and a sliding angle (SA) about 10, and good hydrophobicity to other common household liquids. In addition, the Cu-fabric maintained chemical stability after 72 h under different extreme conditions, and mechanical durability after 200 cm of abrasion length. Furthermore, the separation efficiency of light oil/water mixtures with Cu-fabric exceeded 97% for n-dodecane, n-hexane, kerosene, cyclohexane and n-heptane and Cu-fabric maintained a high separation efficiency for n-dodecane and n-hexane after 30 separation cycles. The as-prepared Cu-fabric exhibited potential for practical application in oil/water separation of oil-contaminated industrial sewage in complicated environments.



中文翻译:

原位还原法制备具有油水分离复用性的铜族功能化棉织物

通过简单地原位还原包覆Cu(OH)2的织物并将其浸入正十八烷硫醇(ODT )中,制备具有超疏水性的Cu物种(Cu / Cu 2 O / CuO NPs)功能化织物(Cu-fabric)。溶液,其中棉织物作为生物支撑材料,在NH 3 ·H 2存在下固定Cu 2+O.分别用SEM,EDS,XPS和ATR-FTIR检测了表面形貌,元素组成,价态和官能团,并提出了Cu织物的形成机理。所制备的Cu织物显示出对去离子水的超疏水性,其水接触角(WCA)为约153.5,滑动角(SA)为约10,并且对其他普通家用液体具有良好的疏水性。此外,铜纤维在不同的极端条件下72小时后仍保持化学稳定性,在200 cm磨损长度后仍保持机械耐久性。此外,与正构十二烷,正己烷,煤油,环己烷和正庚烷相比,含铜织物的轻油/水混合物的分离效率超过97%,而正构十二烷和正构烷烃的铜织物仍保持较高的分离效率。 30个分离循环后的己烷。

更新日期:2020-01-25
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