Spontaneous Phase and Morphology Transformations of Anodized Titania Nanotubes Induced by Water at Room Temperature
Spontaneous Phase and Morphology Transformations of Anodized Titania Nanotubes Induced by Water at Room Temperature
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DOI：
10.1021/nl2015262
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发表时间：
2011-09-01
期刊：
影响因子：
10.8
通讯作者：
Domen, Kazunari
中科院分区：
文献类型：
--
作者：
Wang, Daoai;Liu, Lifeng;Domen, Kazunari
我们报道了一种在室温下由水诱导的二氧化钛纳米管的自发相变，这使得阳极氧化的无定形纳米管能够在没有任何其他后处理的情况下结晶成介孔纳米线。这些介孔TiO（2）纳米材料的比表面积比阳极氧化后的TiO（2）纳米管提高了约5.5倍，从而显著提高了光催化活性。本方法不仅允许灵活地控制TiO（2）纳米结构的形态，而且可以从根本上消除用于结晶非晶TiO（2）的高温操作的需要。
We report a spontaneous phase transformation of titania nanotubes induced by water at room temperature, which enables the as-anodized amorphous nanotubes to be crystallized into anatase mesoporous nanowires without any other post-treatments. These mesoporous TiO(2) nanomaterials have a markedly improved surface area, about 5.5 times than that of the as-anodized TiO(2) nanotubes, resulting in a pronounced enhanced photocatalytic activity. The present approach not only allows a flexible control over the morphology of TiO(2) nanostructures but can fundamentally eliminate the need for high temperature operations for crystallizing amorphous TiO(2).