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采用乙二醇回流法合成了复合氟化物KAlF4和KAlF4:Ce3+纳米粒子,并利用X射线衍射(XRD),透射电子显微镜(TEM),X射线光电子能谱(XPS)等技术对其结构、形貌、粒径大小以及表面含氧量进行了表征。结果表明,采用回流法在适当的反应条件下可制得单一晶相的KAlF4和KAlF4:Ce3+纳米粒子,其平均粒径为32.5 nm。KAlF4的O1s的XPS分峰谱图表明,其表面只有一种氧种为化学吸附氧(α氧),且表面氧的含量小于5%。KAlF:Ce3+的发射光谱中最大发射峰位于330 nm处,归属于Ce3+的5d→4f跃迁。
The complex fluoride KAlF4 and KAlF4: Ce3 + nanoparticles were synthesized by ethylene glycol reflux method. Their structures and morphology were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy Appearance, particle size and surface oxygen content were characterized. The results show that single crystal KAlF4 and KAlF4: Ce3 + nanoparticles can be prepared by reflux method under the appropriate reaction conditions. The average particle size is 32.5 nm. The XPS spectrum of O1s of KAlF4 shows that only one kind of oxygen is chemically adsorbed oxygen (αoxygen) on the surface and the surface oxygen content is less than 5%. The emission peak of KAlF: Ce3 + is at 330 nm, belonging to the 5d → 4f transition of Ce3 +.