摘要
以Ce(SO4)2.4H2O为主要材料,采用超声-沉淀法制备了掺杂Ti4+的纳米CeO2,并研究了掺杂Ti4+离子对CeO2的晶型和抗紫外性能的影响。用X-ray衍射、傅立叶红外光谱仪、紫外分光光度计、对其进行了表征。测试结果表明,CeO2晶型为面心立方,粒径范围15nm～25 nm,并且CeO2的红外吸收峰明显发生蓝移。当Ti/Ce摩尔比为0.4∶1时吸收性能最好,使CeO2的光谱响应范围变宽。单体CeO2的紫外屏蔽范围在250nm～350 nm,掺杂了Ti4+离子的CeO2的紫外屏蔽范围在220nm～450 nm。
Ti4＋-doped nano-CeO2 particles were prepared by ultrasound-precipitation method with Ce（SO4）2·4H2O as raw material,the influence of Ti4＋ on crystal type and anti-UV properties of CeO2 was studied.FT-IR、XRD and UV-Vis were employed to characterize the sample.The results indicated that Ti4＋-doped nano-CeO2 particles were face-centered cubic with crystal size 15~25 nm.It is obviouds that infrared absorption peaks were blue shifted.When the molar ratio of Ti/Ce was o.41,the light response of nano-CeO2 particles was the best.UV-shielding performance of pure nano-CeO2 was achieved in the UV region between 250 nm and 350 nm.The UV region from 220 nm to 450 nm was shielded with doping Ti4＋ in molar ratio of 0.41.
出处
《稀土》
EI
CAS
CSCD
北大核心
2012年第3期60-63,共4页
Chinese Rare Earths
基金
辽宁省自然科学基金资助项目(20092181)
