通过简单的水热法成功制备了新型三维异质结抗菌剂ZnO/BiOI杂化纳米花.采用X射线粉末衍射仪、扫描电镜、高分辨透射电镜、Brunauer-Emmett-Teller、X射线光电子能谱仪等对所得材料进行了表征.此外, 研究了ZnO/BiOI杂化纳米花在可见光下对大肠杆菌 (E. Coli) 的抗菌活性.结果表明, 与ZnO (56％) 和BiOI (74％) 相比, ZnO/BiOI异质结对大肠杆菌 (E. Coli) 的抗菌活性最强 (93％) .这是由于ZnO/BiOI异质结高的比表面积, 以及电荷从ZnO表面有效地转移到BiOI表面, 有助于形成羟基自由基.研究表明, 两种不同半导体之间的异质结构对于其光生载流子的动态特性起着非常重要的作用.%The novel 3 D heterojunction antibacterial agent ZnO/BiO I hybrid nanoflowers were successfully fabricated by a facile hydrothermal method. A series of techniques were used to characterize the obtained materials, including X-ray powder diffraction, scanning electron microscope, high resolution transmission electron microscopy, Brunauer-Emmett-Teller, X-ray photo-electron spectroscopy. Moreover, the antibacterial activities of the obtained ZnO/BiO I hybrid nanoflowers to Escherichia Coli (E. Coli) under visible light were investigated. The results indicated that ZnO/BiO I heterojunction had the strongest antimicrobial activity against Escherichia Coli (E. Coli) (93％) in comparison to those with ZnO (56％) and BiO I (74％) , separately. It was due to the high surface areas, and effective interfacial charge transfer from ZnO to BiO I that facilitated the formation of hydroxy radicals. This study showed that the heterostructure between two different semiconductors played a very important role in the dynamic characteristics of their photogenerated carriers.
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