| Ce3+掺杂La2O3的17O固体核磁共振研究 |
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| 引用本文： | 赵理,丁维平,彭路明.Ce3+掺杂La2O3的17O固体核磁共振研究[J].无机化学学报,2013,29(18). |
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| 作者姓名： | 赵理 丁维平 彭路明 |
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| 作者单位： | 南京大学化学化工学院, 介观化学教育部重点实验室, 南京 210093;南京大学化学化工学院, 介观化学教育部重点实验室, 南京 210093;南京大学化学化工学院, 介观化学教育部重点实验室, 南京 210093 |
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| 基金项目： | 国家自然科学基金资助项目(No．)。 |
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| 摘 要： | 本文用水热共沉淀法制备Ce3+掺杂La2O3的前驱体,随后在H2/N2气氛下用高温煅烧法合成了不同Ce3+浓度的掺杂La2O3。由于Ce3+的掺杂,17O固体核磁共振谱图中在698、650和558处出现了新的共振峰;随着Ce3+掺杂浓度的增加,这些峰的强度也随之增强。根据谱峰位置和强度,对谱图进行了归属:698、650处的共振峰应源自与Ce3+相连的四配位O(OCeLa3),558处的信号则来自于与Ce3+相连的六配位O(OCeLa5)。通过17O固体核磁共振能够直接观测与Ce3+直接相连的O显示该方法将可能用于研究稀土掺杂氧化物功能材料。
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| 关 键 词： | 氧化镧 核磁共振 三价铈 密度泛函 氧十七 |
| 收稿时间： | 5/4/2013 12:00:00 AM |
| 修稿时间： | 7/4/2013 12:00:00 AM |
17O Solid-State NMR Studies of Ce3+ Doped La2O3 |
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| ZHAO Li,DING Wei-Ping and PENG Lu-Ming.17O Solid-State NMR Studies of Ce3+ Doped La2O3[J].Chinese Journal of Inorganic Chemistry,2013,29(18). |
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| Authors: | ZHAO Li DING Wei-Ping and PENG Lu-Ming |
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| Institution: | Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China;Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China;Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China |
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| Abstract: | In this paper, La2O3 doped with varied Ce3+ concentrations were synthesized via hydrothermal co-precipitation followed by high temperature calcined process in H2/N2 atmosphere. Three new peaks show up at 698, 650 and 558 in17O solid state NMR spectra due to Ce3+ doping. The intensies of these peaks increase with Ce3+ concentration. According to the resonant frequencies and the intensities, the peaks at around 698 and 650, and 558 are assigned to four-coordinated OCeLa3 and six-coordinated OCeLa5 species, respectively. The results show that 17Osolid-state NMR spectroscopy can be used to study rare earth doped oxides for applicable functional materials. |
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| Keywords: | lanthanum oxide NMR Ce3+ density functional theory 17O |
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