Ultra-Weak Chemiluminescence Enhanced by Cerium-Doped LaF3 Nanoparticles: A Potential Nitrite Analysis Method

Yufei Wang; Yanran Wang; Chunxia Huang; Tianyou Chen; Jing Wu

doi:10.3389/fchem.2020.00639

Ultra-Weak Chemiluminescence Enhanced by Cerium-Doped LaF₃ Nanoparticles: A Potential Nitrite Analysis Method

Front Chem. 2020 Aug 7:8:639. doi: 10.3389/fchem.2020.00639. eCollection 2020.

Authors

Yufei Wang¹, Yanran Wang¹, Chunxia Huang¹, Tianyou Chen¹, Jing Wu^{1

2}

Affiliations

¹ School of Science, China University of Geosciences, Beijing, China.
² Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, Qingdao University of Science and Technology, Qingdao, China.

Abstract

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⁺.

Keywords: cerium; chemiluminescence; fluoride; nanoparticles; nitrite.