| 不同形貌Bi4Ti3O12粒子的可控合成及光催化性能 |
| |
| 引用本文： | 林雪,关庆丰,刘婷婷,张瑶,邹春杰.不同形貌Bi4Ti3O12粒子的可控合成及光催化性能[J].物理化学学报,2013,29(2):411-417. |
| |
| 作者姓名： | 林雪 关庆丰 刘婷婷 张瑶 邹春杰 |
| |
| 作者单位： | 1.College of Chemistry, Key Laboratory of Preparation and Application Environmentally Friendly Materials of the Ministry of Education, Jilin Normal University, Siping 136000, Jilin Province, P. R. China;2.School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, P. R. China |
| |
| 基金项目： | supported by the Key Laboratory of Preparation and Application of Environmentally Friendly Materials of the Ministry of Educationof China;Doctoral Scientific Research Project of Jilin Normal University,China~~ |
| |
| 摘 要： | 研究了用一步水热法制备的不同形貌的钛酸铋(Bi4Ti3O12, BIT)粒子的光学和可见光催化性能, 并对其晶体结构和微观结构用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)和高分辨透射电子显微镜(HRTEM)等手段进行了表征. XRD结果表明, 所制备的BIT 样品为层状钙钛矿结构. FESEM结果表明, 通过控制水热过程的反应参数可以得到不同形貌的纳米粒子. 紫外-可见漫反射光谱(UV-Vis DRS)表明BIT 样品的带隙能约为2.88-2.93 eV. 利用可见光(λ>420 nm)照射下的甲基橙(MO)降解实验评价了BIT 样品的光催化性能. 结果表明, BIT 的光催化活性比掺氮TiO2 (N-TiO2)高得多. 研究了形貌对BIT 光催化性能的影响. 所制备的BIT纳米带光催化效率最高, 经可见光照射360 min, 甲基橙溶液的降解率可达到95.0%.
|
| 关 键 词： | 钛酸铋 纳米球 纳米片 纳米带 可控合成 光催化降解 |
| 收稿时间： | 2012-09-14 |
| 修稿时间： | 2012-11-21 |
Controllable Synthesis and Photocatalytic Activity of Bi4Ti3O12 Particles with Different Morphologies |
| |
| LIN Xue, GUAN Qing-Feng,LIU Ting-Ting,ZHANG Yao,ZOU Chun-Jie.Controllable Synthesis and Photocatalytic Activity of Bi4Ti3O12 Particles with Different Morphologies[J].Acta Physico-Chimica Sinica,2013,29(2):411-417. |
| |
| Authors: | LIN Xue GUAN Qing-Feng LIU Ting-Ting ZHANG Yao ZOU Chun-Jie |
| |
| Institution: | 1.College of Chemistry, Key Laboratory of Preparation and Application Environmentally Friendly Materials of the Ministry of Education, Jilin Normal University, Siping 136000, Jilin Province, P. R. China;2.School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, P. R. China |
| |
| Abstract: | Bismuth titanate (Bi4Ti3O12, BIT) particles with different morphologies were synthesized by a one-step hydrothermal process and their optical and photocatalytic properties were investigated. The crystal structure and microstructures were characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). XRD patterns demonstrate that the as-prepared BIT samples have layered perovskite structure. FESEM shows that BIT crystals can be fabricated in different morphologies by simply manipulating the reaction parameters of the hydrothermal process. The UV-visible diffuse reflectance spectra (UV-Vis DRS) reveal that the band gaps of the BIT photocatalysts are about 2.88-2.93 eV. The as-prepared BIT photocatalysts exhibit higher photocatalytic activities toward the degradation of methyl orange (MO) under visible light irradiation (λ>420 nm) when compared with traditional N-doped TiO2 (N-TiO2). The influence of morphology on the photocatalytic properties of BIT was also studied. BIT nanobelt structures displayed the highest photocatalytic activity. Up to 95.0% MO was decolorized after visible light irradiation for 360 min. |
| |
| Keywords: | 4Ti3O12'' '''') Bi4Ti3O12" target="_blank">">Bi4Ti3O12 Nanosphere Nanoplate Nanobelt Controllable synthesis Photocatalytic degradation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
| 点击此处可从《物理化学学报》下载免费的PDF全文 |
|
