中文摘要：

本文用水热共沉淀法制备Ce^3＋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Ce^3＋浓度的掺杂La2O3。由于Cen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Ce^3＋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Ce^3＋相连的四配位O（OCeLa3），558处的信号则来自于与Ce^3＋相连的六配位O（OCeLas）。通过^17O固体核磁共振能够直接观测与Ce^3＋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。

英文摘要：

In this paper, La203 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 in 17O 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 170 solid-state NMR spectroscopy can be used to study rare earth doped oxides for applicable functional materials.