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Abstract: In this study, high-density transparent tin dioxide (SnO2) nanorod array was prepared on fluorine-doped tin oxide (FTO) glass substrate by thermal evaporation of a mixture of SnCl2·2H2O and anhydrous ZnCl2 powders at 600°C in air atmosphere. The structural properties of the sample were investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microscopy (FESEM). Further investigation revealed that ZnCl2 played an important role in the formation of high transparent SnO2 nanorod array. CdS film was deposited on SnO2 nanorod array by the CBD method to form SnO2/CdS heterostructure film. Photoelectrochemical measurements indicated that the novel SnO2/CdS photoelectrode had a potential application in photovoltaic devices. [Copyright &y& Elsevier]

Abstract: In this work, 3D SnO2 with a hierarchical structure, which was built by numerous one-dimensional tetragonal prism nanorods, had been firstly synthesized by a facile one-step hydrothermal route at 200°C in the presence of cetyltrimethylammonium bromide (CTAB). The cationic surfactant CTAB played a key role in forming the 3D SnO2 hierarchical structure composed of nanorods. In addition, the novel SnO2 hierarchical structure exhibited good gas-sensing properties. The gas sensor showed good selectivity to ethanol gas. Moreover, a linear dependence of the sensitivity on the ethanol concentration was observed, it suggested that the sensor fabricated by SnO2 hierarchical structures is very suitable to detect ethanol with low concentration. [Copyright &y& Elsevier]