Abstract TiO2/ZnO composite aerogel is synthesized using Zn(NO3)2·H2O and titanium butoxide as precursors through sol-gel route combined with C2H5OH superfluid drying technique. The effects of the Zn2+/Ti4+ molar ratios and concentration on the antibacterial properties of TiO2/ZnO composite aerogels are investigated. The results show that the specific surface area is as high as 180 m2/g for the samples with the Zn2+/Ti4+ molar ratios of 1.5. The composite aerogels have the maximum inhibition zone of 23 nm and 19.5 nm for E. coli and S. aureus, and the minimum inhibitory concentration for E. coli and S. aureus of 100 ppm.

中文翻译：

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具有优异抗菌活性的TiO2/ZnO复合气凝胶的简便制备

摘要 以Zn(NO3)2·H2O和丁醇钛为前驱体，通过溶胶-凝胶途径结合C2H5OH超流体干燥技术合成了TiO2/ZnO复合气凝胶。研究了Zn2+/Ti4+摩尔比和浓度对TiO2/ZnO复合气凝胶抗菌性能的影响。结果表明，Zn2+/Ti4+摩尔比为1.5的样品的比表面积高达180 m2/g。复合气凝胶对大肠杆菌和金黄色葡萄球菌的最大抑菌圈分别为 23 nm 和 19.5 nm，对大肠杆菌和金黄色葡萄球菌的最小抑菌浓度为 100 ppm。