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, 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：555

起止页码：381-388

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000443153100044)】；

基金：The work was financially supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2017MA023) 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; Antifungal capability; Hydrothermal method

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.