In this work, highly ordered Zn 2 SnO 4 three-dimensional flowerlike superstructures assembled with nanorods have been synthesized by a facile one-step hydrothermal route at 180 °C. The products were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, and selected-area electron diffraction. The morphology of the final products was found to depend strongly on the concentrations of EDA and CTAB used. A possible mechanism for the formation of self-assembled Zn 2 SnO 4 flowerlike superstructures is proposed. In addition, the novel Zn 2 SnO 4 three-dimensional superstructures exhibited good gas-sensing properties that are even better than those of the competing binary metal oxide α-Fe 2 O 3 and In 2 O 3 sensors. The excellent gas-sensing properties make this material interesting not only for use in sensor devices, but also for a number of related electrochemical applications.
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Chen et al. (2011) studied this question.
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