文献类型：期刊文献

英文题名：Durable, self-cleaning and superhydrophobic bamboo timber surfaces based on TiO2 films combined with fluoroalkylsilane

作者：Li, Jingpeng[1,2] Lu, Yun[3] Wu, Zaixing[1,2] Bao, Yongjie[1,2] Xiao, Ruichong[1] Yu, Hui[1,2] Chen, Yuhe[1,2]

第一作者：李景鹏;Li, Jingpeng

通信作者：Li, Jingpeng

机构：[1] China National Bamboo Research Center, Chinese Academy of Forestry, No. 310 Wenyi Road, Hangzhou, Zhejiang, 310012, China; [2] Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China; [3] Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, China

年份：2016

卷号：42

期号：8

起止页码：9621-9629

外文期刊名：Ceramics International

收录：EI(收录号：20161202114605);Scopus(收录号：2-s2.0-84960516956)

语种：英文

外文关键词：Chemical modification - Hydrophobicity - Surface properties - Contact angle - Titanium dioxide - Silicon carbide

摘要：Decorative materials, including bamboo timber, have been proposed to exploit their superhydrophobic and self-cleaning properties, but a comprehensive appraisal of their environmental adaptability is still deficient. In this paper, a robust and durable superhydrophobic surface was formed on bamboo timber substrate through a process combining chemical solution deposition and chemical modification. The superhydrophobic surface resulted from micro-nanoscale binary-structured TiO2 films and the assembly of low-surface-energy fluorinated components, which exhibited a water contact angle of 163±1° and a sliding angle of 3±1°. The surface maintained superhydrophobicity after mechanical abrasion against 1500 mesh SiC sandpaper for 800 mm at the applied pressure of 1.2 kPa, indicating good mechanical stability. Moreover, the superhydrophobic surface exhibited good chemical stability against both acidic and basic aqueous solutions (e.g., simulated acid rain). After exposure to atmosphere for more than 180 days, the obtained surface still maintained a contact angle of 155±2° and a sliding angle of 6±2°, revealing good long-term stability. In addition, the as-prepared superhydrophobic surface exhibited almost complete wet self-cleaning of dirt particles with water droplets. It is believed that the method presented in this study can provide a straightforward and effective route to fabricate a large-area, mechanically robust, anticorrosive and self-cleaning superhydrophobic surface on woody materials for a great number of potential applications. ? 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.