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 D. Li J. Xu J. Wu Z. Bao Y. Li N. Chen Y.

第一作者：Ren D.

机构：[1]Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Chinese Academy of Forestry, Hangzhou, 310012, China

年份：2018

卷号：8

期号：10

外文期刊名：Coatings

收录：Scopus(收录号：2-s2.0-85059574021)

语种：英文

外文关键词：Antifungal property; Bamboo; Flame-retardant property; Layered double nanostructures; TiO₂; ZnO

摘要：A facile method to synthesize ZnO-TiO2-layered double-nanostructures with the average thickness of 20 μm 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 μmwere 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 ?O2- and ?OH were produced from the ZnO-TiO2 surface under visible light irradiation (λ > 420 nm). This large quantity of ?O2- compared to ?OH is considered to be mainly responsible for the inactivation of fungi. Additionally, the limiting oxygen index has increased from25.6%to 30.2%after being coveredwith a ZnO-TiO2 coating, which revealed a significant enhancement of its flame-retardant property. ? 2019 by the authors.