文献类型：期刊文献

英文题名：Efficient Antifungal and Flame-Retardant Properties of ZnO-TiO2-Layered Double-Nanostructures Coated on Bamboo Substrate

作者：Ren, Danjing[1] Li, Jingpeng[1] Xu, Jun[1] Wu, Zaixing[1] Bao, Yongjie[1] Li, Neng[1] Chen, Yuhe[1]

第一作者：Ren, Danjing

通信作者：Li, JP[1];Chen, YH[1]

机构：[1]Chinese Acad Forestry, China Natl Bamboo Res Ctr, Key Lab High Efficient Proc Bamboo Zhejiang Prov, Hangzhou 310012, Zhejiang, Peoples R China

年份：2018

卷号：8

期号：10

外文期刊名：COATINGS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000448545400013)】；

基金：The research was funded by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2017MA023), National Key Research and Development Program of China (2016YFD0600904) and Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province (2014F10047).

语种：英文

外文关键词：bamboo; TiO2; ZnO; layered double nanostructures; antifungal property; flame-retardant property

摘要：A facile method to synthesize ZnO-TiO2-layered double-nanostructures with the average thickness of 20 m on a bamboo substrate was proposed to improve the antifungal and flame-retardant properties. The cross-linked wurtzite ZnO nanostructures with an average thickness of approximately 0.14 m were uniformly distributed on the anatase TiO2 surface. The energy-dispersive X-ray spectroscopy (EDS) confirmed that the ZnO-TiO2 coating on bamboo was a layered double nanostructure. During a two-month antifungal test conducted in an outdoor environment, the fungi began to grow after one week on pristine bamboo and three weeks on ZnO-bamboo and TiO2-bamboo. Furthermore, there was an infected area of 100% after four weeks for pristine bamboo and six weeks for ZnO-bamboo, while there was an infected area of 43% after eight weeks for TiO2-bamboo. By comparison, there was no visible fungal growth on ZnO-TiO2-bamboo until the end of the test. The electron spin resonance (ESR) technique has demonstrated that the reactive oxygen species (ROS) of center dot O-2(-) and center dot OH were produced from the ZnO-TiO2 surface under visible light irradiation (lambda > 420 nm). This large quantity of center dot O-2(-) compared to center dot OH is considered to be mainly responsible for the inactivation of fungi. Additionally, the limiting oxygen index has increased from 25.6% to 30.2% after being covered with a ZnO-TiO2 coating, which revealed a significant enhancement of its flame-retardant property.