| 静电纺丝技术制备Y2O3∶Eu3+纳米带及其发光性质 |
| Synthesis of Y2O3∶Eu3+ Nanoribbons by Electrospinning and Their Luminescent Properties |
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| 摘要: 采用静电纺丝技术制备了PVP/[Y(NO3)3+Eu(NO3)3]复合纳米带，将其进行热处理，获得了Y2O3∶Eu3+纳米带。采用XRD、FTIR、SEM、TEM、荧光光谱等技术对焙烧后的样品进行了表征。结果表明：600 ℃焙烧即可获得Y2O3∶Eu3+纳米带，800 ℃时结晶更为良好，产物属于立方晶系。纳米带表面光滑，由平均直径为30 nm的小颗粒紧密排列而成，为多晶结构。随着温度升高，纳米带宽度减小。焙烧800 ℃获得的Y2O3∶Eu3+纳米带的发光性质优于焙烧600 ℃的Y2O3∶Eu3+纳米带。与体材料相比，该纳米带的激发光谱Eu3+-O2-电荷迁移态(CTB)发生红移，发射光谱发生蓝移。 |
| 关键词: Y2O3∶Eu3+ 纳米带 静电纺丝技术 稀土 光谱 |
| 基金项目: |
| Abstract: PVP/[Y(NO3)3+Eu(NO3)3] composite nanoribbons were prepared via electrospinning, and Y2O3∶Eu3+ nanoribbons were obtained by calcinated the relevant composite nanoribbons at 600 ℃ and 800 ℃. The samples were characterized by XRD, SEM, TEM, FTIR and fluorescence spectroscopy. Y2O3∶Eu3+ nanoribbons calcinated at 800 ℃ were more crystalline than that at 600 ℃. The structure of Y2O3∶Eu3+ nanoribbons was cubic with space group Ia3. The surface of Y2O3∶Eu3+ nanoribbons, which made up of Y2O3∶Eu3+ nanoparticles of ca. 30 nm in diameter closely side by side, was smooth. Y2O3∶Eu3+ nanoribbons was a polycrystalline structure and the width of which decreased with the increasing of calcination temperature. The luminescence properties of Y2O3∶Eu3+ nanoribbons which were obtained by calcinated the relevant composite nanoribbons at 800 ℃ is better than 600 ℃. Compared with the bulk Y2O3∶Eu3+, the red shift of Eu3+-O2- charge transfer band(CTB) in the excitation spectrum and the blue shift in the emission spectrum were observed. |
| Keywords: Y2O3∶Eu3+ nanoribbons electrospinning technology rare earths spectrum |
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| 于长娟,王进贤,于长英,董相廷,刘桂霞.静电纺丝技术制备Y2O3∶Eu3+纳米带及其发光性质[J].无机化学学报,2010,26(11):2013-2017. |
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