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首页> 美国卫生研究院文献>Nanoscale Research Letters >Chances and limitations of nanosized titanium dioxide practical application in view of its physicochemical properties
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Chances and limitations of nanosized titanium dioxide practical application in view of its physicochemical properties

机译：鉴于其物理化学性质纳米二氧化钛实际应用的机会和局限性

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Nanotechnology is a field of science that is nowadays developing in a dynamic way. It seems to offer almost endless opportunities of contribution to many areas of economy and human activity, in general. Thanks to nanotechnology, the so-called nanomaterials can be designed. They present structurally altered materials, with their physical, chemical and biological properties entirely differing from properties of the same materials manufactured in microtechnology. Nanotechnology creates a unique opportunity to modify the matter at the level of atoms and particles. Therefore, it has become possible to obtain items displaying new, useful properties, i.e. self-disinfecting and self-cleaning surfaces. Those surfaces are usually covered by a thin layer of a photocatalyst. The role of the photocatalyst is most of the time performed by the nanosized titanium dioxide (nano-TiO2). Excitation of nano-TiO2 by ultraviolet radiation initiates advanced oxidation processes and reactions leading to the creation of oxygen vacancies that bind water particles. As a result, photocatalytic surfaces are given new properties. Those properties can then be applied in a variety of disciplines, such as medicine, food hygiene, environmental protection or building industry. Practically, the applications include inactivation of microorganisms, degradation of toxins, removing pollutants from buildings and manufacturing of fog-free windows or mirrors.
机译：纳米技术是当今以动态方式发展的科学领域。总的来说，它似乎为经济和人类活动的许多领域提供了几乎无限的机会。借助纳米技术，可以设计所谓的纳米材料。他们提出了结构改变的材料，其物理，化学和生物学特性与用微技术制造的相同材料的特性完全不同。纳米技术创造了一个独特的机会，可以在原子和粒子水平上修饰该物质。因此，变得有可能获得显示出新的，有用的特性，即自消毒和自清洁表面的物品。这些表面通常被一薄层光催化剂覆盖。在大多数情况下，光催化剂的作用是由纳米级的二氧化钛（nano-TiO2）进行的。紫外线对纳米二氧化钛的激发引发了高级的氧化过程和反应，导致形成了结合水颗粒的氧空位。结果，光催化表面被赋予了新的性能。然后可以将这些属性应用于各种学科，例如医学，食品卫生，环境保护或建筑行业。实际上，这些应用包括微生物灭活，毒素降解，从建筑物中清除污染物以及制造无雾的窗户或镜子。

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