| BaZr1-xAlxO3(x=0～0.08)中空微球的制备与发光性能 |
| Preparation and Photoluminescence Properties of Perovskite BaZr1-xAlxO3 (x=0～0.08) Hollow Microspheres |
| 作者 | 单位 | E-mail | | 孙振 | 天津工业大学材料学院,天津市改性与功能纤维重点实验室,天津 300387 | | | 郭佳 | 天津工业大学材料学院,天津市改性与功能纤维重点实验室,天津 300387 | | | 余建国 | 天津工业大学材料学院,天津市改性与功能纤维重点实验室,天津 300387 | | | 黄华 | 天津工业大学材料学院,天津市改性与功能纤维重点实验室,天津 300387 | | | 陈娟 | 天津工业大学材料学院,天津市改性与功能纤维重点实验室,天津 300387 | | | 李国栋 | 吉林大学化学院,无机合成与制备化学国家重点实验室,长春 130012 | | | 赵永男 | 天津工业大学材料学院,天津市改性与功能纤维重点实验室,天津 300387 | zhaoyn@263.net |
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| 摘要: 采用水热法合成了BaZr1-xAlxO3(x=0～0.08)中空微球,通过XRD,SEM,TEM,PL,FTIR等测试手段对样品进行了表征。XRD结果表明,铝成功地掺杂进入了BaZrO3晶格中,占据了B位ZrO6八面体中Zr4+的位置,铝的掺入导致晶胞参数的减小。TEM结果证实了微球的空心结构,产物的平均粒径为150 nm。中空微球在355 nm激光的激发下,均发出波长为423 nm的紫光。与未掺杂的BaZrO3相比,铝掺杂引起的晶格收缩使发光强度呈整体下降趋势,而不等价掺杂引起的氧空位变化导致发光强度随着铝掺杂量的增加出现先增强后减弱的现象。 |
| 关键词: 中空微球 钙钛矿 掺杂 发光 |
| 基金项目: 国家自然科学基金(No.21271138),天津市自然科学基金(No.10JCZDJC21500),吉林大学无机合成与制备国家重点实验室开放课题 (No.2012-20)资助项目。 |
| Abstract: BaZr1-xAlxO3 (x=0～0.08) hollow microspheres with different Al contents were synthesized by hydrothermal method. The samples were characterized by XRD, SEM, TEM, PL, FTIR. XRD data indicated that Al3+ was successfully introduced into the lattice and replaced the Zr4+ cation at B position. Replacing Zr4+ by Al3+ aroused the decrease of cell parameters. TEM observations confirmed the hollow feature and gave a mean particle size of 150 nm. When excited by 355 nm laser, all of the hollow microspheres emitted 423 nm violet light at room temperature. Compared with that of pure BaZrO3, the cell shrinkage that stemmed from Al3+ doping directed to weakened photoluminescence. The non-equivalent doping also led to the variation of oxygen vacancies, which directed to a slightly enhanced photoluminescence with Al3+ doping contents in the range of 1% to 2%. |
| Keywords: hollow microsphere perovskite doping photoluminescence |
| 投稿时间：2012-10-07 修订日期：2012-11-27 |
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| 孙振,郭佳,余建国,黄华,陈娟,李国栋,赵永男.BaZr1-xAlxO3(x=0～0.08)中空微球的制备与发光性能[J].无机化学学报,2013,29(5):936-940. |
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