通过简易的一步水热法在不同制备温度(120℃、135℃、150℃)下成功合成了花状空心Sn3O4微球.利用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HRTEM)、表面积分析仪、紫外可见吸收光谱(UV-Vis)和光致发光谱(PL)等测试手段对其形貌、结构、比表面积和光学性质进行了分析,并以罗丹明B(RhB)为模型污染物研究了样品的光催化性能.实验结果显示:中空微球结构不随水热合成温度发生明显改变;随着水热合成温度的升高,样品的UV-Vis吸收峰从384 nm蓝移至365 nm,同时PL发射峰位的峰强逐渐降低.光催化结果显示,在120℃合成的空心Sn3O4微球具备最优的光催化性能.
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