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Fabrication of superhydrophobic silica film by removing polystyrene spheres

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Abstract

A superhydrophobic silica film has been fabricated by a facile method, which combines the co-sedimentation of dual-sized polystyrene (PS) spheres and the infiltration of a silica sol. The scanning electron microscopy (SEM) observations indicate that the as-prepared silica surface has a hierarchical micro/nano-structure. The micrometer-sized hollow silica particle with nanometer-sized holes on its surface was created by removing the organic polymer at high temperature. After chemically modified by a layer of dodecafluoroheptyl-methyl-dimethoxysilane (DFMS), the silica film has a water contact angle up to 156.4°, showing excellent superhydrophobic property. The present method may enhance widespread application of superhydrophobic film because of its simplicity and cheapness.

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Acknowledgments

The authors are grateful to the National Natural Science Foundation of China for financial support (Grant NO. 21076044).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, Jiangsu, China

    Qianqian Shang, Lijing Gao, Hu Liu & Guomin Xiao

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  1. Qianqian Shang
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  2. Lijing Gao
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  3. Hu Liu
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  4. Guomin Xiao
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Correspondence to Guomin Xiao.

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Shang, Q., Gao, L., Liu, H. et al. Fabrication of superhydrophobic silica film by removing polystyrene spheres. J Sol-Gel Sci Technol 59, 334–337 (2011). https://doi.org/10.1007/s10971-011-2507-7

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  • DOI: https://doi.org/10.1007/s10971-011-2507-7

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