Abstract In this study it is presented the synthesis of octahedron-like Zn2SnO4 (ZTO) nanoparticles by microwave-assisted chemical synthesis and their characterization. The effect of temperature, time of reaction and reactant concentration on structural, morphological and optical properties of the particles was studied. The samples were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy and diffuse reflectance. The results showed that it is necessary to carry out the synthesis at 200 °C with times more than 50 min to obtain a single phase ZTO. The decrease in reactant concentration promotes the reduction of particle size (ranging from 80 to 120 nm) and increase in the band gap above 4.0 eV.

中文翻译：

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Zn2SnO4 纳米粒子的微波辅助化学合成

摘要 本研究介绍了通过微波辅助化学合成法合成八面体状 Zn2SnO4 (ZTO) 纳米粒子及其表征。研究了温度、反应时间和反应物浓度对颗粒结构、形态和光学性质的影响。通过X射线衍射、拉曼光谱、扫描电子显微镜、透射电子显微镜和漫反射对样品进行表征。结果表明，合成单相ZTO需要在200℃下进行50分钟以上的合成。反应物浓度的降低促进了颗粒尺寸的减小（范围从 80 到 120 nm）并增加了 4.0 eV 以上的带隙。