期刊
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
卷 59, 期 2, 页码 334-337出版社
SPRINGER
DOI: 10.1007/s10971-011-2507-7
关键词
Superhydrophobic; Sol-gel; Co-sedimentation; Polystyrene spheres
资金
- National Natural Science Foundation of China [21076044]
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 156.4A degrees, showing excellent superhydrophobic property. The present method may enhance widespread application of superhydrophobic film because of its simplicity and cheapness.
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