Hao Yang,Qingxia Zhang,Ying Chen,Yong Huang,Fang Yang,Zhong Lu
ZnO coated fabrics have attracted wide attentions due to their antibacterial and photocatalytic self-cleaning properties. However, the photo-response of ZnO only in ultraviolet region limits its application. In this paper, ZnO/BiOBr functionalized cotton fabrics were synthesized by a facile and time-saving ultrasonic-microwave combined method. Compared with ZnO coated fabric, the photocatalytic activity of ZnO/BiOBr coated fabric under visible light irradiation was remarkably improved at no sacrifice of its antibacterial activity. Simultaneously, it also showed good resistance to bacterial adhesion and photocorrosion. The introduction of two-dimensional BiOBr nanoflakes not only enhanced the visible light absorption, but also reduced the recombination rate of electron-hole pairs, thus significantly improving the photocatalytic self-cleaning performance of the coated fabric under visible light irradiation. The ZnO/BiOBr coated cotton fabric with both antibacterial and self-cleaning functionalities may have broad application prospects in the fields of textile, medicine and chemical industry.
The treatment of water pollution is faced with a severe postgraduate examination, which shows that pollutants of different properties, such as water-soluble and non-water-soluble pollutants, exist at the same time. In this paper, superhydrophobic S-ZnO/BiOBr cotton (SH cotton) is designed, which has the ability to degrade water-soluble pollutants through light response and the performance of selective removal of organic solvents . The water contact angle of droplets on the surface of the material reached 162°, on which toluene spread rapidly. When applied to an environment with water-soluble pollutants, the material showed an excellent cyclic degradation ability, and the degradation efficiency of 5 cycles’ was higher than 98.4%. Importantly, the 3 cycles of outdoor degradation efficiency was higher than 92.1% under the actual working conditions. The VB positions of the S-ZnO and BiOBr were calculated to be 2.89 eV and 2.96 eV, respectively. The CB positions of the S-ZnO and BiOBr were calculated to be −0.31 eV and 0.38 eV, respectively.
危险品化学品经营许可证（带存储）