文献类型：期刊文献

英文题名：Low-temperature synthesis of flower-like ZnO microstructures supported on TiO2 thin films as efficient antifungal coatings for bamboo protection under dark conditions

作者：Ren, Danjing[1] Li, Jingpeng[1] Bao, Yongjie[1] Wu, Zaixing[1] He, Sheng[1] Wang, Anke[1] Guo, Fan[1] Chen, Yuhe[1]

第一作者：Ren, Danjing

通信作者：Li, Jingpeng|[a0005609f5c43297ca02c]李景鹏;

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：555

起止页码：381-388

外文期刊名：Colloids and Surfaces A: Physicochemical and Engineering Aspects

收录：EI(收录号：20183005583920);Scopus(收录号：2-s2.0-85050146530)

语种：英文

外文关键词：Aspergillus - Coatings - Bamboo - Hydrogen bonds - Hydrothermal synthesis - Temperature - Thin films - X ray photoelectron spectroscopy - Ammonia - Magnetron sputtering - Scanning electron microscopy - Microstructure - Zinc oxide - Energy dispersive spectroscopy - II-VI semiconductors - Low temperature effects

摘要：Bamboo is readily infected with fungi because of its abundant sugar, starch and protein content, which greatly restricts its utilization. To develop a highly effective environmentally sound antifungal agent for bamboo, flower-like ZnO microstructures supported on TiO2 thin films have been synthesized on bamboo surfaces by a facile two-step low-temperature hydrothermal method. According to the results of various analytical techniques, including X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared–attenuated total reflectance spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy, the bamboo substrate combined with anatase TiO2 by a hydrogen bonding or ligand exchange reaction between F and –OH. The F ions on the TiO2 surface combined with [Zn(NH3)4]2+ via electrostatic adsorption, contributing to the formation of a flower-like ZnO microstructure, and were then deposited on the TiO2 thin films. Moreover, the antifungal activities of the samples against a hybrid fungi group consisting of Trichoderma viride Pers. ex Fr (T. viride), Penicillium citrinum Thom (P. citrinum), and Aspergillus niger v. Tiegh (A. niger) were investigated during a three-month period under dark conditions. The results showed that pure TiO2 thin films coated on bamboo presented better antifungal activities, with a 21-day inhibition, than that of the pristine bamboo, with a 5-day inhibition. The flower-like ZnO microstructures supported on the TiO2 thin films bamboo exhibited effective antifungal capability, with a 90-day inhibition. The efficient antifungal behavior is due to the increased generation of reactive oxygen species (ROS) from the coatings by a possible synergistic effect between the ZnO and TiO2 nanoparticles in attacking fungi and causing their death. ? 2018 Elsevier B.V.