高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (2): 368.doi: 10.7503/cjcu20130596

• 物理化学 • 上一篇    下一篇

一种可用于光降解的纳米氧化锌油水分离网

卢飞, 陈雨宁, 刘娜, 曹莹泽, 冯琳()   

  1. 清华大学化学系, 北京 100084
  • 收稿日期:2013-06-27 出版日期:2014-02-10 发布日期:2013-09-29
  • 作者简介:联系人简介: 冯 琳, 女, 博士, 副教授, 主要从事纳米界面材料研究. E-mail:fl@mail.tsinghua.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 51173099)资助

Multifunctional Zinc Oxide-coated Mesh for Oil/Water Separation and Pollutant Degradation

LU Fei, CHEN Yuning, LIU Na, CAO Yingze, FENG Lin*()   

  1. Department of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2013-06-27 Online:2014-02-10 Published:2013-09-29
  • Contact: FENG Lin E-mail:fl@mail.tsinghua.edu.cn
  • Supported by:
    † Supported by the the National Natural Science Foundation of China(No.51173099)

摘要:

通过低温水热法在钢丝网上生长六棱柱形的氧化锌纳米柱. 包覆了氧化锌纳米柱的钢丝网具有水下超疏油的特殊浸润性, 并可用于油水分离. 滤网在室温常压下可对含有汽油、 柴油和原油等油水混合物进行高效快速分离, 分离效率可达98%以上. 材料可以承受1.4 kPa的油层压力且可反复使用. 由于氧化锌的光响应性强, 滤网可快速降解水中的亚甲基蓝, 2 h的降解率可达80%. 包覆了氧化锌纳米柱的钢丝网具备同时进行油水分离和降解环境中污染物的能力, 是一种新型多功能水处理材料.

关键词: 氧化锌, 油水分离, 光降解, 水下超疏油

Abstract:

With an operation of low-temperature hydrothermal treatment, a steel mesh was coated with hexagon-shaped nanorods of zinc oxide. The as-prepared mesh shows good wettability of underwater superoleophobicity to the droplet of 1,2-dichloroethane, making it possible for the use in oil/water separation. Mixture of water with various kinds of oil such as gasoline, diesel and petroleum ether can be separated rapidly with a high separation efficiency of 98%.The mesh could suffer an oil pressure of 1.4 kPa, with the oil thickness of 21 cm. Depending on the UV-response property of zinc oxide, the mesh can also be used in the degradation of methylene blue, which makes it a multifunctional material for water treatment.

Key words: Zinc oxide, Oil/water separation, Photo-degradation, Oleophobicity in water

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