Abstract
Crystalline WO3 nanorods of less than 100 nm in diameter have been successfully synthesized at 240 °C for 48 h at pH 1.5 by the hydrothermal method with sodium tungstate as a tungsten source and potassium sulphate as a subsidiary salt. The morphologies and structures of WO3 rods were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and selected-area electron diffraction (SAED). SEM analysis confirms that the slenderness ratio of the WO3 rods is enlarged with the increase of the reaction temperature at pH 1.5. SAED analysis shows that the synthesized WO3 nanorods are crystalline. Ultraviolet–visible (UV-VIS) absorption spectroscopy shows that absorbent power of UV light for WO3 nanorods enhances with an increase of the slenderness ratio.
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Acknowledgment
The authors would like to acknowledge Research Foundation for Talented Scholars of Suqian College and Planned Science and Technology Project of Suqian (Z2010008).
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Fu, X., Xie, C. & Zhou, L. The Influence of the Temperature on the Optical Absorption Properties and Morphologies of WO3 Nanorods Synthesized by the Hydrothermal Method. J Inorg Organomet Polym 21, 958–961 (2011). https://doi.org/10.1007/s10904-011-9551-1
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DOI: https://doi.org/10.1007/s10904-011-9551-1