通过模板法与溶胶-凝胶法相结合,在温和的条件下制备了介孔Y2O3.再采用水热反应法制得Eu3+、Gd3+单掺杂及Eu3+,Gd3+双掺杂的三种介孔Y2O3组装体(介孔Y2O3∶Eu3+,介孔Y2O3∶Gd3+,介孔Y2O3∶Eu3+,Gd3+).利用广角和小角X射线衍射(XRD)、透射电子显微镜(TEM)对介孔Y2O3进行了表征,结果表明,所制备的介孔Y2O3为立方相,具有六方孔道结构,孔径约10nm.对介孔Y2O3和组装体系进行了荧光光谱(PL)分析,发现在550℃热扩散处理后,介孔Y2O3∶Eu3+的发光存在基质对Eu3+的能量传递,Y2O3∶Eu3+,Gd3+体系中Gd3+对Eu3+也有能量传递作用.
参考文献
[1] | 孙家跃.沸石微孔材料中Ce(Ⅲ)对Tb(Ⅲ)的敏化发光[J].高等学校化学学报,1994(07):961-945. |
[2] | R.T. Wegh;H. Donker;K.D. Oskam;A. Meijerink .Visible quantum cutting in Eu~(3+) -doped gadolinium fluorides via downconversion[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,1999(2):93-104. |
[3] | 陈永虎,刘波,施朝淑,Zimmerer G.GdPO4:Eu3+和GdBO3:Eu3+中"Gd-Eu"间的能量传递[J].中国稀土学报,2005(04):429-433. |
[4] | Roggenbuck J;Schafer H;Tsoncheva T;Minchev C;Hanss J;Tiemann M .Mesoporous CeO2: Synthesis by nanocasting, characterisation and catalytic properties[J].Microporous and mesoporous materials: The offical journal of the International Zeolite Association,2007(3):335-341. |
[5] | Shufen Wang;Feng Gu;Chunzhong Li et al.Synthesis ofmesoporous Eu2O3 microspindles[J].American Chemistry Society,2007,7:2670-2676. |
[6] | Sreethawong T;Chavadej S;Ngamsinlapasathian S;Yoshikawa S .A simple route utilizing surfactant-assisted templating sol-gel process for synthesis of mesoporous Dy2O3 nanocrystal[J].Journal of Colloid and Interface Science,2006(1):219-224. |
[7] | Thammanoon Sreethawong;Sumaeth Chavadej;Supachai Ngamsinlapasathian .Sol-gel synthesis of mesoporous assembly of Nd_2O_3 nanocrystals with the aid of structure-directing surfactant[J].Solid state sciences,2008(1):20-25. |
[8] | Yada M.;Machida M.;Kijima T.;Kitamura H. .Yttrium-based porous materials templated by anionic surfactant assemblies[J].Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics,1998(25):6470-6475. |
[9] | Yolanda Castro;Beatriz Julián-López;Cédric Boissière;Bruno Viana;David Grosso;Clément Sanchez .Preparation, structural and optical characterization of rare earth doped mesoporous Y2O3 thin films by EISA method[J].Microporous and Mesoporous Materials,2007(1/3):273-279. |
[10] | 阳福,刘应亮,容建华,张静娴,袁定胜,黄浪欢.多孔二氧化硅中Gd3+→Eu3+的能量传递[J].无机化学学报,2005(05):643-646. |
[11] | Thomas Justel;Detlef U. Wiechert;Carsten Lau .Optically Functional Zeolites: Evaluation of UV and VUV Stimulated Photoluminescence Properties of Ce~3+-and Tb~3+-doped Zeolite X~**[J].Advanced functional materials,2001(2):105-110. |
[12] | 王孝东,刘晓华,陈绍军,黎明,刘敏.CeO2:Eu3+粉末的溶胶-凝胶法制备及发光性能研究[J].光谱学与光谱分析,2007(11):2182-2185. |
[13] | Yang peidong;Zhao dongyuan;Margolese David et al.Block copolymer templating syntheses of mesoporous metal oxide with large ordering lengths and semicrystalline framework[J].CHEMISTRY OF MATERIALS,1999,11:2813-2816. |
[14] | Dexter D L .A theory of sensitized luminescence in solids[J].Chemical Physics,1953,21(05):836-842. |
[15] | 孙家跃;杜海燕.固体发光材料[M].北京:化学工业出版社,2003:193-194,231-238. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%