以柠檬酸(CA)为螯合剂,乙二醇(EG)为分散剂,通过Pechim法合成出Gd2Zr2O7纳米晶,讨论了pH值、分散剂含量以及热处理温度对样品物相和形貌的影响,采用SEM、TG-DTA、XRD和TEM等测试手段对样品进行了表征.结果表明:溶胶pH值=6,乙二醇含量为柠檬酸的2倍,经900℃煅烧2h获到Gd2Zr2O7样品结晶度高、晶型完整,为缺陷型萤石结构,属于Fm3-m空间群,且粒度均匀,粒径约50 nm,d111面间距为0.304 nm.
参考文献
| [1] | B. Vrjaya Kumar;Radha Velchuri;G. Prasad .Preparation, characterization, photoactivity and XPS studies of Ln_2ZrTiO_7(Ln = Sm and Nd)[J].CERAMICS INTERNATIONAL,2010(4):1347-1355. |
| [2] | Moreno KJ;Fuentes AF;Maczka M;Hanuza J;Amador U .Structural manipulation of pyrochlores: Thermal evolution of metastable Gd-2(Ti1-yZry)(2)O-7 powders prepared by mechanical milling[J].International Journal of Quantum Chemistry,2006(12):3805-3813. |
| [3] | N. J. Hess;B. D. Begg;S. D. Conradson;D. E. McCready;P. L. Gassman;W. J. Weber .Spectroscopic Investigations of the Structural Phase Transition in Gd_2(Ti_(1-y)Zr_y)_2O_7 Pyrochlores[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2002(18):4663-4677. |
| [4] | Y.H. Lee;H.S. Sheu;J.P. Deng .Preparation and fluorite-pyrochlore phase transformation in Gd_2Zr_2O_7[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):595-598. |
| [5] | 张佳珞,马伟民,闻雷,尹凯,王华栋,安玉良.Sol-Gel法制备SrHfO3：Ce闪烁材料及发光特性[J].稀有金属材料与工程,2009(07):1304-1309. |
| [6] | 王华栋,马伟民,闻雷,尹凯,沈世妃.柠檬酸螯合法制备BaHfO3：Ce3+纳米材料及其发光特性[J].稀有金属材料与工程,2009(08):1446-1449. |
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