Coprecipitation synthesis and optical absorption property of Zn2TixSn1–xO4 (0 ≤ x ≤ 1) solid solutions
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We report a coprecipitation method for the preparation of solid solutions in the Zn2TixSn1–xO4 (0 ≤ x ≤ 1) series. The precipitates obtained from the coprecipitation were calcined using different temperatures and then characterized with X-ray diffraction (XRD), Raman scattering (RS), scanning electron microscopy (SEM), and surface area measurements to gain insights into the solid-state reaction and phase transformation during the calcinations. Formation of the Zn2TixSn1–xO4 solid solutions was observed after the calcination up to 1000 °C, which is much lower than the temperature (1300 °C) required in the conventional solid-state reaction method. The optical absorption property of the Zn2TixSn1–xO4 solid solutions, measured by ultraviolet-visible diffuse reflectance spectroscopy (UV–Vis DRS), was shown to change according to the composition of the solid solutions.
KeywordsTiO2 Raman Spectrum SnO2 Calcination Temperature Raman Mode
The authors would like to thank Profs. Jianyuan Yu and Ruji Wang, and Mr. Jingzhi Wei for their help in this work. This work was financially supported by MOST of China (2003B86504).