Shape-controlled synthesis of tungsten oxide nanostructures and characterization

K Petsom, A Kopwitthaya, M Horphathum, Y Ruangtaweep, N Sangwaranatee, J Kaewkhao


Synthesis of tungsten oxide nanorods and nanodisks were reported here using hydrothermal method. Our study is focusing on the role of hexadecyltrimethyl-ammonium bromide (CTAB) and silver ions in tungsten oxide nanostructure formation comparing with typical methods. The sodium tungstate dehydrate was used as a precursor. We found that optimum concentration of CTAB and silver ions can provide a rod-like structure. Meanwhile, nanodisks were observed at the absence of silver ion. In addition, concentration of silver ions introduced to growth solution plays an important role in obtained nanostructure dimension. All prepared nanostructures were characterized by X-Ray diffraction (XRD) for crystalline structures examination. Moreover, field emission scanning electron microscopy (FE-SEM) was performed to determine morphology.

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Printed ISSN: 0857-6149

Online ISSN: 2630-0508