碳纳米管负载钇和铕氧化物纳米颗粒及其发光行为的研究  

Carbon Nanotubes Coated with Y and Eu Oxide Nano-Particles and Their Luminescent Properties

作　　者：陈曦[1] 王志诚[1] 韦进全[1] 王昆林[1] 吴德海[1] 

机构地区：[1]清华大学机械工程系教育部先进成形制造重点实验室,北京100084

出　　处：《中国稀土学报》2007年第2期245-248,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目(50672047);国家纳米科学中心资助项目

摘　　要：研究了碳纳米管上负载Y2O3和Y2O3∶Eu3+纳米颗粒的工艺。采用透射电镜、扫描电镜、X射线衍射对负载的效果进行表征并研究了负载产物的发光性能。结果表明,采用化学沉淀法可在碳纳米管上负载平均直径约为10 nm的Y2O3和Y2O3∶Eu3+颗粒。负载的Y2O3∶Eu3+纳米颗粒在波长201 nm处具有明显的主激发峰,而在620 nm处具有较强的主发射峰。与普通的纳米Y2O3∶Eu3+荧光粉相比,激发峰显著蓝移,而发射峰则红移。The process of coating 2O^3＋ and Y2O3：Eu^3＋ nano-particles on the carbon nanotubes （CheFs） was studied. The products were characterized by scanning electron microscope （SEM）, transmission electron microscope （TEM） and X-ray diffraction （XRD）. Y2O3 and Y2O3：Eu^3＋ nano-particles with diameter of about 10 nm can be deposited on the surface of CNTs by chemical coprecipitation method. The Y2O3：Eu^3＋ nano- particles coated on the CNTs had a main excitation peak centered at 201 nm and a main emission peak centered at 620 nm. The luminescent spectra of them showed a notable blue shift in excitation spectra and a red shift in emission spectra compared with those of the normal Y2O3：Eu^3＋ nano-particles fluorescent powder.

关 键 词：碳纳米管 Y2O3 Y2O3 EU^3+ 光致发光 稀土 

分 类 号：TB383[一般工业技术—材料科学与工程]