【摘要】 针对纳米ZnO在制备以及使用的过程中极易发生团聚从而影响其抗菌性能这一缺点，设计实验使得纳米ZnO在溶胶凝胶过程中与多孔SiO₂进行复合。通过扫描电子显微镜（Scanning electron microscope, SEM）以及透射电子显微镜（Transmission electron microscopy, TEM）等可以发现，ZnO很好地复合在多孔SiO₂的骨架上并且分散得较为均匀。通过表面积测试（Brunner-emmet-teller measurement, BET）以及光致发光光谱（Photoluminescence spectrum,PL）的测试可以发现，复合材料的比表面积得到提高且光学性能加强。通过菌落计数法探究复合材料与单组分纳米ZnO的抗菌性能差异以及复合材料中纳米ZnO含量的变化导致的抗菌性能的变化。结论证明，当纳米ZnO与多孔SiO₂进行复合之后，材料的抗菌性能得到了极大的提高，抑菌率超过了99%。更多还原

【Abstract】 Aiming at the disadvantage that nano ZnO is easy to agglutinate in the process of preparation and use, which will affect its antibacterial performance, experiments are designed to make nano ZnO compound with porous SiO₂ in the sol-gel process. Through scanning electron microscope（SEM） and transmission electron microscopy（TEM）, it can be found that ZnO is well combined on the porous SiO₂ skeleton and dispersed evenly. The BET and PL tests show that the specific surface area of composites is improved and the optical properties are enhanced. The difference of antibacterial properties between composites and singlecomponent nano ZnO, and the change of antibacterial properties caused by the change of nano ZnO content in composites are investigated by the colony counting method. Conclusion is proved that the antibacterial properties of nano ZnO and porous SiO₂ are greatly improved with the antibacterial rate of more than 99%.更多还原