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Large-scale controlled synthesis of silica nanotubes using zinc oxide nanowires as templates

机译:以氧化锌纳米线为模板大规模控制合成二氧化硅纳米管

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We report on the controlled synthesis of silica nanotubes on a large scale using ZnO nanowires as templates. The ZnO nanowires are first coated with a uniform silica layer by a sol-gel method. Then silica nanotubes are obtained after removal of ZnO nanowires in diluted hydrochloric acid solution. The thickness of the outer walls is tuned from ~5 to ~30 nm and the inner diameter is completely dependent on the size of the ZnO nanowires. Moreover, three-dimensional nanotubes such as tetrapod-like silica nanotubes are also synthesized through the same approach. Silica nanotubes with various thicknesses of outer walls and with special morphologies are expected to have potential applications in designing and fabricating novel nanodevices.
机译:我们报告了使用ZnO纳米线作为模板大规模控制二氧化硅纳米管的合成。 ZnO纳米线首先通过溶胶-凝胶法涂有均匀的二氧化硅层。然后在稀盐酸溶液中去除ZnO纳米线后,获得二氧化硅纳米管。外壁的厚度从约5纳米调整到约30纳米,内径完全取决于ZnO纳米线的尺寸。此外,还通过相同的方法合成了三维纳米管,例如四足状的二氧化硅纳米管。具有不同外壁厚度和特殊形态的二氧化硅纳米管有望在设计和制造新型纳米器件中具有潜在的应用。

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