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Synthesis, characterization, and photoeatalytie properties of pyrochlore Bi_2Ti_2O_7 nanotubes

机译:烧绿石Bi_2Ti_2O_7纳米管的合成,表征及光催化性能

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Bismuth titanate (Bi_2Ti_2O_7) nanotubes were successfully synthesized with an alumina template-based sol-gel technique. As-synthesized nanotubes are smooth and uniform with diameters ranging from 180 to 330 nm and lengths varying from 7 to 12 mu m. Extensive characterization of as-prepared samples has been performed using x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), energy-dispersive x-ray spectroscopy (EDS), and selected-area electron diffraction (SAED). Photocatalytic studies indicate that as-prepared nanotubes possess higher photocatalytic activity than the corresponding bulk sample prepared without the use of an alumina template.
机译:利用基于氧化铝模板的溶胶-凝胶技术成功合成了钛酸铋(Bi_2Ti_2O_7)纳米管。合成后的纳米管是光滑且均匀的,直径范围为180至330 nm,长度范围为7至12μm。使用X射线衍射(XRD),扫描电子显微镜(SEM),透射电子显微镜(TEM),高分辨率TEM(HRTEM),能量色散X射线光谱仪(EDS)对制备的样品进行了广泛的表征)和选择区域电子衍射(SAED)。光催化研究表明,所制备的纳米管比不使用氧化铝模板制备的相应整体样品具有更高的光催化活性。

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