Study on titania nanotube arrays prepared by titanium anodization in NH4F/H2SO4 solution

Study on titania nanotube arrays prepared by titanium anodization in NH4F/H2SO4 solution
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NH4F/H2SO4溶液中钛阳极氧化制备二氧化钛纳米管阵列的研究

DOI:
10.1007/s10853-006-1104-6
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发表时间:
2007-04
影响因子:
4.5
通讯作者:
Hu, Xiao-feng
Hu, Xiao-feng
中科院分区:
材料科学3区
文献类型:
--
作者:
Xiao, Xiu-feng;Liu, Rong-fang;Tian, Tian;She, Hou-de;Hu, Xiao-feng

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本文研究了在NH_4F/H_2SO_4电解液中二氧化钛纳米管阵列的形成。在优化的电解液条件下,得到了内径约120 nm、长度约300 nm的二氧化钛纳米管阵列。在形成过程中,观察到了电流的变化。电流-时间曲线表明,二氧化钛纳米管阵列的演化过程分为三个阶段。研究了二氧化钛纳米管阵列在高温下的稳定性。所制备的二氧化钛纳米管阵列为非晶态,随着温度的升高,其晶型为锐钛矿型和金红石型。用环境扫描电子显微镜和X射线衍射仪对样品进行了表征。
In this paper, the formation of titania nanotube arrays was investigated in NH4F/H2SO4 electrolyte. Under optimized electrolyte conditions, the titania nanotube arrays with an inner diameter of about 120 nm and a length of about 300 nm was obtained. During the formation process, the variety of current was observed. The current–time curve implied that the evolvement process of titania nanotube arrays include three stages. The stability of titania nanotube arrays at elevated temperatures was studied. The as-prepared titania nanotube arrays is amorphous, crystallized in anatase and rutile as the rising of the temperature. The samples were characterized by ESEM and XRD.
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