Influence Of Anodization Parameters On Morphology Of TiO2 Nanostructured Surfaces
Influence Of Anodization Parameters On Morphology Of TiO2 Nanostructured Surfaces
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DOI：
10.5185/amlett.2016.6156
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Mukta Kulkarni;A. Mazare;P. Schmuki;A. Iglič
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作者：
Mukta Kulkarni;A. Mazare;P. Schmuki;A. Iglič
钛（Ti）具有良好的耐腐蚀性、强度和生物相容性，是最有前途的生物医用材料之一。二氧化钛（TiO 2）纳米结构是在自组织条件下通过钛箔的电化学阳极氧化获得的;阳极氧化参数如阳极氧化时间、电压、温度和最重要的电解质组成对所得形貌是至关重要的。纳米结构在乙二醇（EG）基电解质中生长，并且我们评估了水含量的影响，因为在不添加水的情况下在电解质中没有形成纳米结构，并且随着水含量的增加，获得纳米孔或纳米管（也取决于施加的电势和阳极氧化时间）。电解质中水含量的增加使得能够通过孔壁分裂机制从纳米孔缓慢转变为纳米管。从目前的结果，可以得出结论，电解质中的水对在有机电解质中通过电化学阳极氧化获得的纳米结构的类型具有确定的影响。水在EG基电解质中的作用的这种当前研究对于获得用于特定生物应用的纳米结构的所需形态（直径、长度、顶部开口形态）是有用的。版权所有© 2016 VBRI Press.
Titanium (Ti) is one of the most promising biomaterial for biomedical devices due to its high corrosion resistance and specific combination of strength and biocompatibility. Titanium dioxide (TiO2) nanostructures are obtained by electrochemical anodization of Ti foils under self-organization condition; anodization parameters such as anodization time, voltage, temperature and most important electrolyte composition are critical for the resulting morphology. Nanostructures are grown in ethylene glycol (EG) based electrolytes and we evaluated the influence of the water content, as no nanostructures are formed in the electrolyte without water addition, and with increasing water content, either nanopores or nanotubes are obtained (depending also on the applied potential and anodization time). The increase in water content in the electrolyte enables the slow transition from nanopores to nanotubes, which occurs by a pore-wall splitting mechanism. From the current results, one can conclude that the water in the electrolyte has a definite effect on the type of nanostructures obtained by electrochemical anodization in organic electrolytes. This current investigation of effect of water in EG based electrolytes is useful for obtaining the desired morphology of the nanostructures (diameter, length, open-top morphology) for specific bioapplications. Copyright © 2016 VBRI Press.