| 纳米发光材料LnVO4:Eu(Ln=La,Gd,Y)的光谱研究 |
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| 引用本文： | 张洪武,付晓燕,牛淑云,韩燕,孙公权,辛勤.纳米发光材料LnVO4:Eu(Ln=La,Gd,Y)的光谱研究[J].光谱学与光谱分析,2004,24(10):1164-1167. |
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| 作者姓名： | 张洪武 付晓燕 牛淑云 韩燕 孙公权 辛勤 |
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| 作者单位： | 中国科学院大连化物所直接醇燃料电池实验室(DMFC),辽宁,大连,116023;辽宁师范大学化学系,辽宁,大连,116029;中国科学院大连化物所直接醇燃料电池实验室,DMFC,辽宁,大连,116023;中国科学院大连化物所催化国家重点实验室(SKLC),辽宁,大连,116023 |
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| 摘 要： | 采用络合溶胶 凝胶法制备了系列纳米发光材料LnVO4:Eu(Ln =La ,Gd ,Y) ,并采用X射线衍射(XRD)、红外光谱 (FTIR)、荧光光谱以及紫外 可见光谱 (UV Vis)对三种发光材料的结构以及发光性质进行研究。结果表明 :YVO4与GdVO4具有相同的结构 ,均属于四方晶系 ,二者具有相似的光谱性质 ;而LaVO4属于单斜晶系 ,受对称性的影响其光谱也相应的发生了变化 ,红外光谱和发射光谱的特征峰发生明显的宽化 ,紫外光谱峰的数目增多
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| 关 键 词： | 纳米LnVO4:Eu 红外光谱 荧光光谱 紫外-可见光谱 |
| 文章编号： | 1000-0593(2004)10-1164-04 |
| 修稿时间： | 2003年8月18日 |
Spectral Studies of Nanosized LnVO4:Eu(Ln= La, Gd, Y) |
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| ZHANG Hong-wu,FU Xiao-yan,NIU Shu-yun,HAN Yan,SUN Gong-quan,XIN Qin.Spectral Studies of Nanosized LnVO4:Eu(Ln= La, Gd, Y)[J].Spectroscopy and Spectral Analysis,2004,24(10):1164-1167. |
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| Authors: | ZHANG Hong-wu FU Xiao-yan NIU Shu-yun HAN Yan SUN Gong-quan XIN Qin |
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| Institution: | Dalian Institute of Chemical Physics, DMFC, Chinese Academy of Science, Dalian 116023, China. |
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| Abstract: | Nanosized LnVO_4:Eu (Ln=La, Gd, Y) with diameters ranging from 20 to 50 nm were synthesized by complex sol-gel technique. The structures and spectral properties of LnVO_4:Eu were studied by X-ray powder diffraction (XRD), Fourier transform (FT-IR) spectroscopy, luminescence spectra and ultraviolet spectroscopy (UV). The experimental results show that YVO_4:Eu and GdVO_4:Eu have similar spectral properties because they both have the structure of xenotime, while the structure of LaVO_4:Eu belongs to monazite, whose symmetry is inferior to the former vanadates. Consequently the spectral properties of LaVO_4:Eu are obviously (different) from the other two luminescence materials, as the peaks of infrared spectrum and emission spectrum become wider and the number of peaks in UV-Vis spectrum increases. |
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| Keywords: | Nanosized LnVO_4:Eu(Ln= La Gd Y) IR spectra Luminescence spectra UV-Vis spectra |
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