离子液体辅助水热法合成六方WO_3纳米棒束（英文）  

Ionic Liquid-Assisted Hydrothermal Synthesis of Hexagonal WO_3 Nanorod Bundles

作　　者：闫智英[1] 李俊杰[1] 段德良[1] 王伟[1] 王家强[1] 

机构地区：[1]云南大学化学科学与工程学院,昆明650091

出　　处：《无机化学学报》2013年第12期2637-2642,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21063016,No.U1033603)资助项目

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。Hexagonal tungsten oxide （h-WO3） was synthesized by an ionic liquid bromide （Emim＋Br-））-assisted hydrothermal method at 180 ℃ for 21 h. The characterized by X-ray powder diffraction （XRD）, scanning electron microscopy （1-methyl-3-ethyl imidazole as-synthesized products were （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 W03 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-W03 nanorod bundles is proposed according to the experimental results.

关 键 词：离子液体 纳米棒束 WO3 水热合成 

分 类 号：O649.5[理学—物理化学]