Salt-assisted synthesis of tree-like oriented SnO₂ nanodendrite

Abstract

Tree-like SnO₂ nanodendrites in large amounts have been prepared through two-step reactions. The nanoparticles used as the precursors have taken aggregation forming tree-like or string of nanodendrtie. The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and energy dispersive spectrometer (EDS), respectively. The results showed that molar ratio of the ethanol/distilled water is an important factor for formation of the different dendrite structures. There are different morphologies between tree-like SnO₂ nanowhiskers and bunch of SnO₂ nanorods. However, they are growing along the \left[\mathrm{11}\overline{\mathrm{2}}\right].

Key words： crystal morphology; nano-structures; nanodendrite

Acknowledgments

This work was supported by grants from the Program of Science and Technology Bureau of Qingdao (NO. 08-1-3-14-JCH).

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