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首页> 外文会议>NATO Advanced Research Workshop on Nanostructured Materials and Coatings for Biomedical and Sensor Applications Aug 4-8, 2002 Kyiv, Ukraine >NANOSTRUCTURED MeSiO_2 (Me=Ag, Cu) COATINGS WITH ANTIBACTERIAL ACTIVITY
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NANOSTRUCTURED MeSiO_2 (Me=Ag, Cu) COATINGS WITH ANTIBACTERIAL ACTIVITY

机译：具有抗菌活性的纳米结构MeSiO_2（Me = Ag，Cu）涂层

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摘要

In the present work, composite metal containing silicate thin coatings (Me=Ag, Cu) were prepared on glass substrates by the sol-gel route. The preparation process included hydrolysis and subsequent polycondensation of corresponding alkoxide under refluxing and addition of soluble salt of antibacterial metal to the resulting sol. The coatings deposited by dipping process, were thermally treated in oxidative and reductive conditions up to 500℃ for metal nanoparticles formation. The coating structure and the nanoparticles formation were studied by X-ray Diffraction, AFM, UV-VIS and Heavy Ion Rutherford Backscattering (HIRBS) Spectroscopies. The antibacterial activity against Eschericha Coll was examined by the so-called antibacterial-drop test. The possible correlation between the layer interdiffusion after the thermal treatment and the antibacterial activity, was considered and analyzed. The coatings exhibited a high antibacterial activity, which was enhanced with the increase of the metal concentration and was decreased with the increase of temperature of thermal treatment and metal nanoparticles formation.
机译：在本工作中，通过溶胶-凝胶法在玻璃基板上制备了含复合金属的硅酸盐薄涂层（Me = Ag，Cu）。制备方法包括水解，然后在回流下缩合相应的醇盐，并将抗菌金属的可溶性盐加到所得溶胶中。通过浸涂工艺沉积的涂层，在高达500℃的氧化和还原条件下进行热处理，以形成金属纳米颗粒。通过X射线衍射，AFM，UV-VIS和重离子卢瑟福背散射（HIRBS）光谱学研究了涂层结构和纳米颗粒的形成。通过所谓的抗细菌滴落试验来检验对Eschericha Coll的抗菌活性。考虑并分析了热处理后层间扩散与抗菌活性之间可能的相关性。涂层表现出很高的抗菌活性，随着金属浓度的增加而增强，而随着热处理温度和金属纳米颗粒形成的增加而降低。

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