Abstract
The influence of synthesis method (thermal, sol-gel, CVD) on structure and morphology of tin (IV) oxide powders has been considered. The comparison of physical and chemical properties of the obtained powders has been investigated. The rational conditions for the directed synthesis of zero-dimensional (0D) and one-dimensional (1D) SnO2 structures by chemical vapor deposition (CVD) method have been found. It was shown that 0D and 1D SnO2 nanostructures have not only visual differences but also vary in physical, chemical, optical, and electrical properties. In particular, they differ in intensity of peaks on X-ray diffraction patterns, values of specific surface area, absorption bands in infrared spectra, and nature of current-voltage dependencies. The effect of morphology and modification on optical and electrical characteristics and gas sensitivity of tin (IV) oxide nanostructures of different morphology has been established.
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