Comparison of Infectious Agents Susceptibility to Photocatalytic Effects of Nanosized Titanium and Zinc Oxides: A Practical Approach.
Comparison of Infectious Agents Susceptibility to Photocatalytic Effects of Nanosized Titanium and Zinc Oxides: A Practical Approach.
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DOI：
10.1186/s11671-015-1023-z
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发表时间：
2015-12
影响因子：
--
通讯作者：
Pławińska-Czarnak J
中科院分区：
文献类型：
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作者：
Bogdan J;Zarzyńska J;Pławińska-Czarnak J
纳米技术有助于更有效地根除出现在医院、兽医诊所和食品加工厂的病原体，这些病原体对传统药物或消毒剂具有耐药性。由于必须发明和实施消灭病原体的新方法，纳米技术似乎已经成为对这种迫切需要的反应。在这一科学领域的一个显著成就是创造了基于高级氧化过程（AOPs）的自消毒表面。由此，光催化现象得到了实际应用。在对病毒、朊病毒、细菌、酵母和霉菌的杀灭能力研究最多的AOPs中，有TiO2/UV和ZnO/UV工艺。二氧化钛（TiO2）和氧化锌（ZnO）被粉碎成纳米颗粒后，起到光催化剂的作用。紫外线（UV）辐射是决定其激发的一种剂。利用纳米TiO2和ZnO的光催化特性的方法被证明是高效的灭活感染性病原体的方法。因此，它们正以越来越大的规模得到应用。基于aop的消毒被认为是一种非常有前途的工具，可以帮助解决食品卫生和公共卫生保护问题。感染因子对光催化过程的易感性大致可按以下顺序排列：病毒>朊病毒>革兰氏阴性菌>革兰氏阳性菌>酵母菌>霉菌。
Nanotechnology contributes towards a more effective eradication of pathogens that have emerged in hospitals, veterinary clinics, and food processing plants and that are resistant to traditional drugs or disinfectants. Since new methods of pathogens eradication must be invented and implemented, nanotechnology seems to have become the response to that acute need. A remarkable achievement in this field of science was the creation of self-disinfecting surfaces that base on advanced oxidation processes (AOPs). Thus, the phenomenon of photocatalysis was practically applied. Among the AOPs that have been most studied in respect of their ability to eradicate viruses, prions, bacteria, yeasts, and molds, there are the processes of TiO2/UV and ZnO/UV. Titanium dioxide (TiO2) and zinc oxide (ZnO) act as photocatalysts, after they have been powdered to nanoparticles. Ultraviolet (UV) radiation is an agent that determines their excitation. Methods using photocatalytic properties of nanosized TiO2 and ZnO prove to be highly efficient in inactivation of infectious agents. Therefore, they are being applied on a growing scale. AOP-based disinfection is regarded as a very promising tool that might help overcome problems in food hygiene and public health protection. The susceptibility of infectious agents to photocatalylic processes can be generally arranged in the following order: viruses > prions > Gram-negative bacteria > Gram-positive bacteria > yeasts > molds.