A robust superhydrophobic antibacterial Ag-TiO₂ composite film immobilized on wood substrate for photodegradation of phenol under visible-light illumination

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• 作者：Likun Gao^a ; ^{gaolknefu@163.com" class="auth_mail" title="E-mail the corresponding author} ; Wentao Gan^a ; Shaoliang Xiao^a ; Xianxu Zhan^b ; Jian Li^a ; ^{nefulijian@163.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ag&ndash ; TiO2 composite film ; Antibacterial ; Photodegradation ; Superhydrophobic ; Wood
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：1 February 2016
• 年：2016
• 卷：42
• 期：2
• 页码：2170-2179
• 全文大小：3361 K

文摘

Ag–TiO₂ heterostructures with Ag nanocrystals and TiO₂ particles well-grown on wood substrate was achieved by a two-step protocol combining hydrothermal synthesis and silver mirror reaction. The investigation of the photocatalytic ability demonstrated that the wood coated with Ag–TiO₂ composite film possess excellent photocatalytic activity, superior to the wood coated with pure TiO₂ particles, for the degradation of phenol under visible-light illumination. The Ag/TiO₂-coated wood was further modified by (heptadecafluoro-1,1,2,2-tetradecyl)trimethoxysilane, which acted as a crucial role in improving the repellency toward water and imparting self-cleaning property to the wood products. The modified wood has potent antibacterial activity toward both Gram-positive and Gram-negative bacterium. The multifunctional film coated on wood surface exhibits a good photodegradation of organic pollutant and a robust superhydrophobicity, leading to an important application in self-cleaning.