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可控润湿性的ZnO修饰不锈钢网的制备及其油水分离性能

王春莹 齐博浩 刘长松 赵欣生 栗心明

王春莹, 齐博浩, 刘长松, 等. 可控润湿性的ZnO修饰不锈钢网的制备及其油水分离性能[J]. 复合材料学报, 2022, 39(0): 1-8
引用本文: 王春莹, 齐博浩, 刘长松, 等. 可控润湿性的ZnO修饰不锈钢网的制备及其油水分离性能[J]. 复合材料学报, 2022, 39(0): 1-8
Chunying WANG, Bohao QI, Changsong LIU, Xinsheng ZHAO, Xinming LI. Preparation of ZnO modified stainless steel mesh with controllable wettability and its oil-water separation performance[J]. Acta Materiae Compositae Sinica.
Citation: Chunying WANG, Bohao QI, Changsong LIU, Xinsheng ZHAO, Xinming LI. Preparation of ZnO modified stainless steel mesh with controllable wettability and its oil-water separation performance[J]. Acta Materiae Compositae Sinica.

可控润湿性的ZnO修饰不锈钢网的制备及其油水分离性能

基金项目: 国家自然科学基金项目(51875299);山东省自然科学基金面上项目(ZR2019MEE044)
详细信息
    通讯作者:

    刘长松,博士,教授,硕士生导师,研究方向为:表面技术与纳米材料 E-mail:66218483@qq.com

  • 中图分类号: TG178

Preparation of ZnO modified stainless steel mesh with controllable wettability and its oil-water separation performance

  • 摘要: 为了制备出具有可控润湿性的不锈钢滤网,并根据其相关特性用与研究油水分离性能,本文通过水热法在不锈钢表面生长一层氧化锌,构造微纳米粗糙度,随后用不同链长的脂肪酸改性的方法,成功制备出具有可控润湿性的不锈钢滤网。采用接触角测量仪、傅里叶红外光谱仪、扫描电子显微镜及X射线衍射仪等分别对样品的润湿性和表面形貌及成分进行分析,采用油水分离装置表征样品的油水分离效率及重复使用性。结果表明依据不同链长的脂肪酸改性的样品出现了从超亲水到超疏水的润湿性变化,范围为0°~158°,油始终保持在0°。油水分离效率在92%~98%,重复使用50次后,仍然具有油水分离的性能。因此,制备的不锈钢滤网具有优异的油水分离性能和良好的重复使用性能。

     

  • 图  1  可控润湿性的ZnO修饰的不锈钢网的制备方法流程

    Figure  1.  Preparation process of stainless steel net modified by ZnO with controllable wettability

    图  2  水滴在氧化锌涂层上铺展过程

    Figure  2.  Spreading process of water droplets on zinc oxide film

    图  3  硬脂酸(左)和丙酸(右)改性后不锈钢网膜上水滴的形状

    Figure  3.  Shape of water droplets on the stainless steel omentum modified by stearic acid (left) and propionic acid (right)

    图  4  脂肪酸链长与水、油在不锈钢网膜上的接触角的关系

    Figure  4.  Relationship between chain length of fatty acids and contact angle for water and oil on the stainless steel omentum films.

    图  5  不锈钢滤网膜特殊润湿性的表征

    Figure  5.  Characterization of the special wettability of stainless steel films

    图  6  原始不锈钢滤网与超疏水不锈钢滤网的SEM图像

    Figure  6.  SEM image of original stainless steel mesh and superhydrophobic stainless steel mesh

    图  7  不同浓度的碱性物处理下的不锈钢表面SEM图像

    Figure  7.  Surface SEM images treated with different concentrations of alkaline stainless steel substances

    图  8  不锈钢滤网的XRD图谱

    Figure  8.  XRD spectra of stainless steel mesh

    图  9  改性后不锈钢滤网的FT-IR图谱

    Figure  9.  FT-IR spectra of stainless steel mesh

    图  10  超疏水超亲油不锈钢滤网油水分离试验过程

    Figure  10.  superhydrophobic and superoleophilic stainless steel mesh oil-water separation experiment process

    图  11  超疏水超亲油不锈钢滤网不同油水混合物的分离效率

    Figure  11.  superhydrophobic and superoleophilic stainless steel mesh separation efficiency of different oil-water mixtures

    图  12  超疏水超亲油不锈钢滤网上循环次数与分离效率、接触角的关系

    Figure  12.  The relationship between the number of cycles and separation efficiency and contact angle on the superhydrophobic and superoleophilic stainless steel mesh

    图  13  超疏水超亲油不锈钢滤网循环50次后的表面的形貌

    Figure  13.  The surface morphology of superhydrophobic and superoleophilic stainless steel mesh after 50 cycles

    图  14  超疏水超亲油不锈钢滤网经酸碱盐三种溶液浸泡后的接触角。

    Figure  14.  Contact Angle of super hydrophobic super oil-philic stainless steel screen soaked by acid, alkali and salt solution

    表  1  不同液体的表面张力及密度

    Table  1.   Surface tension and density of different liquids

    LiquidsWater1,1,1dichlo-romethaneChloroformKerosenen-heptanePetrol
    Surface tension/(mN·m−1)722829242022
    Density/(g·mL−1)11.321.50.80.6830.75
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出版历程
  • 收稿日期:  2021-11-08
  • 录用日期:  2022-01-03
  • 修回日期:  2021-12-11
  • 网络出版日期:  2022-02-12

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