A facile template-free method for preparing bi-phase TiO2 nanowire arrays with high photocatalytic activity

A facile template-free method for preparing bi-phase TiO2 nanowire arrays with high photocatalytic activity
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一种简便的无模板方法制备具有高光催化活性的双相TiO2纳米线阵列

DOI:
10.1016/j.matlet.2010.05.035
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发表时间:
2010-08
期刊:
影响因子:
3
通讯作者:
Xiao, Ning
Xiao, Ning
中科院分区:
材料科学3区
文献类型:
--
作者:
Liu, Jiawen;Gao, Yuan;Li, Zhonghua;Xiao, Ning

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采用两步阳极氧化法制备了TiO2纳米管阵列,并对其进行热处理,得到了有序的双相TiO2纳米线阵列。纳米线阵列由金红石相和金红石相组成,直径约为50 nm。通过对橙子溶液的降解,表征了TiO2纳米线阵列的光催化活性。结果表明,在700 °C下制备的双相纳米线阵列比P25薄膜和TiO2纳米管阵列具有更高的催化活性。
Ordered bi-phase TiO2nanowire arrays were simply obtained by heat treating TiO2nanotube arrays prepared by a two-step anodization method. The nanowire arrays are composed of anatase and rutile phases with uniform diameters around 50nm. The photocatalysis activities of TiO2nanowire arrays were characterized by quantifying the degradation of methyl orange solution. And the results indicated that the bi-phase nanowire arrays, especially obtained at 700 °C, showed much higher activity than that of P25 film or anatase TiO2nanotube array.
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