Citation:
YAN Zhi-Ying, LI Jun-Jie, DUAN De-Liang, WANG Wei, WANG Jia-Qiang. Ionic Liquid-Assisted Hydrothermal Synthesis of Hexagonal WO3 Nanorod Bundles[J]. Chinese Journal of Inorganic Chemistry,
;2013, 29(12): 2637-2642.
doi:
10.3969/j.issn.1001-4861.2013.00.397
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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.
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