In this work, cerium-doped LaF₃ nanoparticles (LaF₃:Ce NPs) were successfully synthesized and characterized. Its chemiluminescence (CL) property was studied, and it was amazingly found that it intensely enhanced the ultra-weak CL of the NaNO₂-H₂O₂ system. The CL mechanism was systematically investigated and suggested to be the recombination of electron-injected and hole-injected LaF₃:Ce NPs. The new CL system was developed to be a facile, original, and direct method for nitrite analysis. Experimental conditions were optimized and then a satisfactory linear relationship between CL intensity and nitrite concentration was obtained. This work introduced a new pathway for the research and application of traditional fluoride NPs doped with RE³⁺.

在这项工作中，铈掺杂的LaF ₃纳米粒子（LaF ₃：Ce NPs）已成功合成和表征。研究了其化学发光（CL）性质，令人惊讶地发现它强烈增强了NaNO ₂ -H ₂ O ₂系统的超弱CL 。对CL机理进行了系统地研究，并认为是电子注入和空穴注入LaF ₃的复合：CE NP。新的CL系统开发成为一种简便，原始且直接的亚硝酸盐分析方法。优化了实验条件，得到了满意的CL强度与亚硝酸盐浓度的线性关系。这项工作为传统的掺有RE ^3+的氟化物NPs的研究和应用开辟了一条新途径。