| 花状结构Bi2WO6多孔微球: 组装及光催化性能 |
| Flower-Like Bi2WO6 Porous Microspheres: Assembly and Photocatalytic Performance |
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| 摘要: 利用表面活性剂十六烷基三甲基溴化铵(CTAB)、十二烷基苯磺酸钠(SDBS)作为结构导向剂，在水热条件下合成了由纳米片组装而成的Bi2WO6花状多孔微球的新颖结构。探讨了反应时间、表面活性剂种类等因素对产物形貌、结构和性能的影响。在氙灯照射下，发现使用CTAB所得到的Bi2WO6比添加SDBS所得到的样品具有更高的催化罗丹明B降解的活性，原因是前者具有较大的比表面积和吸收阈值。同时提出了晶体可能的生长机理为各向异性生长特性和自组装-Ostwald熟化过程的结合。 |
| 关键词: Bi2WO6 光催化活性 表面活性剂 环境处理 |
| 基金项目: |
| Abstract: The new flower-like Bi2WO6 porous microspheres self-assembled by nanosheets were synthesized through a simple hydrothermal process using surfactants (CTAB, or SDBS) as the structure-directing agent. The effect of reaction time and surfactants played important roles in the morphology and size of Bi2WO6. The Bi2WO6 prepared in the presence of CTAB showed a higher photocatalytic activity for degradation of rhodamine-B (RhB) than that of the sample prepared in the presence of SDBS under Xe lamp irradiation, and the reason is that the former has larger surface area and wider absorption range. Meanwhile, the intrinsic anisotropic growth nature and self-assembly-Ostwald ripening were proposed for the formation mechanism. |
| Keywords: Bi2WO6 photocatalytic activity surfactant environmental treatment |
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| 摘要点击次数: 1985 |
| 全文下载次数: 2888 |
| 章 剑,章 燕,沈玉华,李 村,谢安建.花状结构Bi2WO6多孔微球: 组装及光催化性能[J].无机化学学报,2012,28(4):739-744. |
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