| 离子液体辅助水热法合成六方WO3纳米棒束 |
| Ionic Liquid-Assisted Hydrothermal Synthesis of Hexagonal WO3 Nanorod Bundles |
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| 摘要: 提出了利用简单的离子液体1-甲基-3-乙基-咪唑溴辅助水热法合成六方WO3纳米棒束的方法，对其结构进行了表征，并讨论其形成机理。TEM照片表明：WO3纳米棒束由长200~300 nm、直径25~30 nm的纳米棒组装而成。离子液体1-甲基-3-乙基-咪唑溴在纳米棒的形成过程中起到了结构导向剂的作用。 |
| 关键词: 离子液体 纳米棒束 WO3 水热合成 |
| 基金项目: 国家自然科学基金（No.21063016，No.U1033603）资助项目。 |
| Abstract: Hexagonal tungsten oxide (h-WO3) was synthesized by an ionic liquid (1-methyl-3-ethyl imidazole bromide (Emim+Br-)) -assisted hydrothermal method at 180 ℃ for 21 h. The as-synthesized products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) and energy dispersive X-ray spectroscopy (EDS). The results show that the morphologies of WO3 are controlled by the amount of Emim+Br-. In 0.5 g Emim+Br--added solution, the product is h-WO3 nanorod bundles composed of uniform WO3 nanorods with average diameter of 25 nm and length of 200~300 nm. The formation mechanism of h-WO3 nanorod bundles is proposed according to the experimental results. |
| Keywords: ionic liquid nanorod bundle tungsten oxide hydrothermal synthesis |
| 投稿时间：2013-06-14 修订日期：2013-09-01 |
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| 闫智英,李俊杰,段德良,王伟,王家强.离子液体辅助水热法合成六方WO3纳米棒束[J].无机化学学报,2013,29(12):2637-2642. |
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