HAO Xiao-min,YU Hai-yan,XU Fang-xian,et al.Preparation of a Perovskite Nanocrystal Core-Shell Structure and Application in Heavy Metal Ion Detection[J].Journal of Instrumental Analysis,2023,42(09):1141-1150.
HAO Xiao-min,YU Hai-yan,XU Fang-xian,et al.Preparation of a Perovskite Nanocrystal Core-Shell Structure and Application in Heavy Metal Ion Detection[J].Journal of Instrumental Analysis,2023,42(09):1141-1150. DOI: 10.19969/j.fxcsxb.23031403.
Preparation of a Perovskite Nanocrystal Core-Shell Structure and Application in Heavy Metal Ion Detection
In this study,three ligands were used to synthesize a kind of perovskite nanocrystals core-shell structure with a very thin shell layer that nanocrystals cannot be completely coated with this core-shell. Compared with the original perovskite nanocrystals,the core-shell structure of the perovskite quantum dots has better stability,and also has pores that can contact with related metal ions,so that the fluorescence of the quantum dots can be quenched,so as to achieve the purpose of detecting heavy metal ions. The perovskite nanocrystalline core-shell structure prepared in this study can sensitively detect copper and mercury ions,and the theoretical detection limit of Cu,2+, can reach 0.60 nmol/L,while the theoretical detection limit of Hg,2+, can reach 0.64 nmol/L. This study is of great significance for the development of novel fluorescence detection agents for quantum dots.
关键词
钙钛矿纳米晶核壳结构重金属离子检测荧光检测剂
Keywords
perovskite nanocrystalscore-shell structureheavy metal ion detectionfluorescence detection agents
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