Citation: LIN Xue, YU Li-Li, YAN Li-Na, YAN Yong-Sheng, GUAN Qing-Feng, ZHAO Han. Controllable Synthesis and Photocatalytic Activity of Layered, Flowerlike, and Rodlike Bismuth Titanate Nanostructures[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(11): 2415-2421. doi: 10.3969/j.issn.1001-4861.2013.00.346 shu

Controllable Synthesis and Photocatalytic Activity of Layered, Flowerlike, and Rodlike Bismuth Titanate Nanostructures

1.
1 College of Chemistry, Key Laboratory of Preparation and Application of Environmentally Friendly Materials of the Ministry of Education, Jilin Normal University, Siping, Jilin 136000, China;

Received Date: 31 January 2013
Available Online: 28 May 2013
Fund Project: 环境友好材料制备与应用教育部重点实验室项目和吉林省科技发展计划项目(20130522071JH)资助项目。 (20130522071JH)

Layered, flowerlike, and rodlike bismuth titanate (Bi₄Ti₃O₁₂, BIT) nanostructures were synthesized via the controllable hydrothermal method. The phase structures and morphologies were measured by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). XRD patterns demonstrate that the as-prepared samples are of layered-perovskite structure. FESEM shows that BITcrystals can be fabricated in different morphologies by simply manipulating the reaction parameters of hydrothermal process. The UV-Vis diffuse reflectance spectra (UV-Vis DRS) reveal that the band gaps of BIT photocatalysts are 2.63~2.95 eV. The as-prepared BIT photocatalysts exhibit higher photocatalytic activities in the degradation of methyl orange (MO) under visible light irradiation (λ>420 nm) compared with traditional N-doped TiO₂ (N-TiO₂). Layered BIT nanostructures show the highest photocatalytic activity. Up to 95.0% MO is decolorized after visible light irradiation for 360 min. In addition, the reason for the difference in the photocatalytic activities obtained at different conditions was studied based on the structures and morphologies.
- bismuth titanate;layered;flowerlike;rodlike;controllable synthesis;photocatalytic degradation
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