Electrochemical synthesis of self-organized TiO2 nanotubular structures using an ionic liquid (BMIM-BF4)
Electrochemical synthesis of self-organized TiO2 nanotubular structures using an ionic liquid (BMIM-BF4)
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DOI：
10.1016/j.electacta.2008.07.031
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发表时间：
2008-12-30
影响因子：
6.6
通讯作者：
Schmuki, P.
中科院分区：
文献类型：
--
作者：
Paramasivam, I.;Macak, J. M.;Schmuki, P.
我们表明，由咪唑盐与BF 4反离子（BMIM-BF 4）组成的离子液体可以直接用于生长自组织TiO 2纳米管的良好定义的层。为此，在该电解质中对Ti金属基底进行阳极氧化，电位范围在3V-Ag/AgCl和10 V-Ag/AgCl之间，而不添加游离氟化物物质（氟化物用于所有先前的管生长过程）。影响所得纳米管层的形态和几何形状的关键因素是阳极电位、阳极氧化时间，特别是离子液体中的水含量。所得纳米管层具有在约300-650 nm范围内的厚度;单个管具有在27 nm和43 nm之间的直径。(c)2008 Elsevier Ltd保留所有权利。
We show that an ionic liquid consisting of imidazolium salt with a BF4 counter ion (BMIM-BF4) can directly be used to grow well-defined layers of self-organized TiO2 nanotubes. For this a Ti metal substrate is anodized in this electrolyte for potential range between 3 V-Ag/AgCl and 10 V-Ag/AgCl without addition of free fluoride species (fluorides are used in all previous tube growth procedures). Key factors that influence the morphology and geometry of the resulting nanotubular layer are the anodic potential, the anodization time and particularly the water content in the ionic liquid. The resulting nanotubes layers have thickness in the range of approximately 300-650 nm; with individual tubes that have diameters between 27 nm and 43 nm. (c) 2008 Elsevier Ltd All rights reserved.