Two-dimensional hierarchical porous silica film and its tunable superhydrophobicity

被引：137

作者：

Li, Y ^{[1
]}

Cai, WP ^{[1
]}

Cao, BQ ^{[1
]}

Duan, GT ^{[1
]}

Sun, FQ ^{[1
]}

Li, CC ^{[1
]}

Jia, LC ^{[1
]}

机构：

[1] Chinese Acad Sci, Anhui Key Lab Nanomat & Nanostruct, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China

来源：

NANOTECHNOLOGY | 2006年 / 17卷 / 01期

关键词：

D O I：

10.1088/0957-4484/17/1/040

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Based on a monolayer polystyrene (PS) colloidal crystal, large-scale two-dimensional (2D) hierarchical porous silica (orderly arranged macropores and disordered mesopores in its skeleton) with a high specific surface area was fabricated by the sol-gel technique. Such material has demonstrated superhydrophilicity with a water contact angle (CA) of 5 degrees and superhydrophobicity with a water CA of 154 degrees after surface modification with fluoroalkylsilane. More interestingly, the water CA can be increased to 165 degrees using a heat-deformed PS template, which suggests that the superhydrophobicity can be controlled by the template with different heat-deformed extents. Such silica films have applications in fields of adsorbent, catalytic,

引用

页码：238 / 243

页数：6

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