以聚乙二醇(PEG,Mn=6000)为模板剂,结晶四氯化锡(SnCl4·5H2O)和尿素为原料,采用微波溶剂热法在180℃、添加0.12 mmol PEG的条件下制备出了单分散性良好的SnO2微球.通过XRD、SEM、TEM和FT-IR等分析手段对产物进行表征,并结合光致发光(PL)谱研究了产物的发光性能.结果表明:SnO2微球是由大量细小晶粒堆积而成的,微球直径约1.3 μm.经400℃煅烧2h后,微球表面致密光滑且直径未发生明显变化.FT-IR谱图中550 cm-1处吸收峰应为表面结构改变引起的表面振动模式.PL谱表明煅烧前SnO2微球在320～450 nm处具有宽而强的发射带,煅烧后发射带强度大幅下降,说明产物的晶格缺陷对近带边发射有重要影响.
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