采用水热法合成La3+、Eu3共掺杂纳米Ce1-x(La0.5Eu0.5)xO2-δ固溶体.利用X射线衍射技术(XRD)表征样品的相结构,并对固溶体的晶胞参数进行拟合.通过拉曼光谱及紫外可见漫反射光谱表征其电子跃迁性能及掺杂效应.XRD结果表明,双离子掺杂固溶限不小于x=0.30,样品晶粒尺寸小于20 nm,晶胞参数随着掺杂量的升高而逐渐增大.Raman光谱F2g振动峰的逐渐宽化及向低波数方向移动.紫外漫反射光谱表明,随着掺杂量的增大,固溶体能隙先蓝移后红移.
参考文献
[1] | 刘铃声,许延辉,熊晓柏,曹鸿璋,孟志军,王英杰.稀土纳米材料的研究进展[J].稀土,2012(06):84-89. |
[2] | 贺娟,冉锐,樊俊,翁端.钇掺杂对Ce0.33Zr0.67O2储氧性能的影响[J].稀土,2012(03):6-11. |
[3] | Y. Ji;J. Liu;T. He .The effect of Pr co-dopant on the performance of solid oxide fuel cells with Sm-doped ceria electrolyte[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2005(1/2):317-322. |
[4] | 张国芳,张羊换,葛启录,张胤,刘铃声,张练练.纳米Ce1-x(Fe0.5La0.5)xO2-δ固溶体的水热合成及光谱分析[J].光谱学与光谱分析,2011(12):3315-3318. |
[5] | 张国芳,刘铃声,张羊换,葛启录,张胤,何长青.纳米Ce1-x(Nd0.5Fe0.5)xO2-δ固溶体的合成及结构表征[J].稀土,2011(02):28-33. |
[6] | Dikmen S.;Greenblatt M.;Shuk P. .Hydrothermal synthesis and properties of Ce_(1-x)La_xO_(2-δ) solid solutions[J].Solid state ionics,1999(1/2):89-95. |
[7] | Swanand Patil;Sudipta Seal;Yu Guo;Alfons Schulte;John Norwood .Role of trivalent La and Nd dopants in lattice distortion and oxygen vacancy generation in cerium oxide nanoparticles[J].Applied physics letters,2006(24):243110-1-243110-3-0. |
[8] | L.N.Ikryannikova;A.A.Aksenov;G.L.Markaryan;G.P.Murav'eva;B.G.Kostyuk;A.N.Kharlanov;E.V.Lunina .The red-ox treatments influence on the structure and properties of M_2O_3-CeO_2-ZrO_2 (M = Y, La) solid solutions[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2001(1/2):225-235. |
[9] | Patsalas P.;Logothetidis S.;Sygellou L.;Kennou S. .Structure-dependent electronic properties of nanocrystalline cerium oxide films - art. no. 035104[J].Physical review, B. Condensed matter and materials physics,2003(3):5104-0. |
[10] | Blueshifts in the ultraviolet absorption spectra of cerium oxide nanocrystallites[J].Journal of Applied Physics,2003(5):3654-3656. |
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%