10.1007/s40089-014-0102-y

Synthesis of hierarchically porous silica film with controllable surface wettability

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  • Shengyang Tao*1,
  • Yuchao Wang,
  1. Department of Chemistry, Dalian University of Technology, Dalian, 116024, CN
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Published in Issue 2014-01-02

How to Cite

Tao, S., & Wang, Y. (2014). Synthesis of hierarchically porous silica film with controllable surface wettability. International Nano Letters, 4(1 (March 2014). https://doi.org/10.1007/s40089-014-0102-y
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Abstract

Abstract A kind of water–oil separation material was fabricated by depositing mesoporous silica microspheres (MS) on filter paper. MS had been prepared via surfactant-template method and modified by octyltriethoxysilane (OTS). The diameter of the microspheres was in the range of 200 to 800 nm. There were uniform mesopores in the microspheres, and the surface area of the microspheres was more than 1,000 m 2  g -1 . The thin film, showing both hydrophobicity and lipophilicity, had a high contact angle for water (greater than 130°) and a low one for n -hexane (about 0°). Meanwhile, the film presented excellent separating efficiency between water and oil, which could reach 98.8%. Good selectivity and simple preparation procedure might lead the material to be highly valuable on water–oil separation.

Keywords

  • Hierarchically porous,
  • Surfaces,
  • Thin films,
  • Water–oil separation
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References

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