In situ synthesis of zirconia nanotube crystallines by direct anodization
In situ synthesis of zirconia nanotube crystallines by direct anodization
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DOI：
10.1016/j.corsci.2008.01.026
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发表时间：
2008-06
影响因子：
8.3
通讯作者：
Jianling Zhao;R. Xu;Xixin Wang;Yangxiang Li
中科院分区：
文献类型：
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作者：
Jianling Zhao;R. Xu;Xixin Wang;Yangxiang Li
采用直接阳极氧化法在含0.5wt.%的1 M（NH 4）2SO 4电解液中制备了氧化锆纳米管晶体NH 4F在不同的施加电压（10- 50 V）。采用X射线衍射、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对氧化锆纳米管的微观结构和晶体结构进行了表征。在最佳工艺条件下，制备出直径达40 nm、长度达12μm的氧化锆纳米管。当外加电压小于或等于30 V时，所制备的纳米管为正交相。当电压提高到50 V时，出现了一些单斜相晶体。
Zirconia nanotube crystallines were obtained using a direct anodization method in 1M (NH4)2SO4electrolyte containing 0.5wt.% NH4F at different applied voltages (10–50V). The microstructure and crystal structure of zirconia nanotubes were characterized by X-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Under optimum conditions zirconia nanotubes with a diameter of up to 40nm and a length of up to 12μm were prepared. The as-prepared nanotubes are of orthorhombic phase when the voltage applied is less than or equal to 30V. Some crystallines of monoclinic phase emerge when increase the voltage to 50V.