期刊
JOURNAL OF MATERIALS SCIENCE
卷 42, 期 14, 页码 5539-5543出版社
SPRINGER
DOI: 10.1007/s10853-006-1104-6
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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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