Hydrophobic photocatalytic composite coatings based on nano-TiO2 hydrosol and aminopropyl terminated polydimethylsiloxane prepared by a facile approach

被引：16
作者：
Ding, Xiaohong [1 ]
Pan, Shiming [1 ]
Lu, Chang [1 ]
Guan, Huaimin [1 ,2 ]
Yu, Xiaowei [4 ]
Tong, Yuejin [1 ,2 ,3 ]
机构：
[1] Fujian Normal Univ, Coll Chem & Mat Sci, Fuzhou 350007, Fujian, Peoples R China
[2] Fujian Normal Univ, Fujian Prov Key Lab Polymer Mat, Fuzhou 350007, Fujian, Peoples R China
[3] Fujian Normal Univ, Fujian Prov Key Lab Adv Mat Oriented Chem Engn, Fuzhou 350007, Fujian, Peoples R China
[4] Fuzhou Minggu Nanotech Co Ltd, Fuzhou 350001, Fujian, Peoples R China
来源：
MATERIALS LETTERS | 2018年 / 228卷
关键词：
Nano-TiO2; hydrosol; Polydimethylsiloxane; Hydrophobic; Photocatalysis; Composite materials; Sol-gel preparation; SELF-CLEANING PROPERTIES; SURFACES; TIO2; NANOPARTICLES;
D O I：
10.1016/j.matlet.2018.05.103
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A facile approach was adopted to fabricate hydrophobic photocatalytic composite coatings from nano-TiO2 hydrosol and aminopropyl terminated polydimethylsiloxane (NH2-PDMS). A strong interaction bewteen nano-TiO2 and polymers was verified by FTIR and XPS. The photocatalytic activity of the composite coatings was about the same as that of superhydrophilic photocatalytic coating according to the degradation activity of methylene blue (MB). The composite coatings were hydrophobic with water contact angles (WCA) around 120 degrees, which remained stable over 318 h against UV irradiation. The discoloration of contaminated MB on coatings was performed under outdoor exposure indicating quicker color bleaching of MB on composite coatings than that on the controls. The advantages of combining hydrophobic and photocatalytic properties would offer a potential solution as self-cleaning surfaces in various applications. (C) 2018 Elsevier B.V. All rights reserved.
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页码：5 / 8
页数：4
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