采用水热法,以氯化铈为铈源、乙二胺为络合剂、水合肼为沉淀剂,通过改变乙二胺的用量制备了四种CeO2粉体样品,通过X射线衍射仪(XRD)、紫外可见分光光度计(UV-Vis)、荧光分光光度计(PL)和扫描电镜(SEM)对合成的CeO2样品的结构、形貌和光学性质进行表征.实验结果表明乙二胺剂量对样品的晶格常数、氧空位度、能带间隙、荧光强度等有显著影响.晶格常数随乙二胺剂量的增加先减小后增大,剂量为5mL时晶格常数最小,氧空位度随乙二胺剂量的增加先增加后减少,剂量为5mL时氧空位浓度最大、样品能带间隙最小、对紫外线的吸收最强、荧光强度最大.
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