| abstract |
The application relates to a novel nanocrystalline material and the field of gas detection thereof, in particular to a core-shell structure nanocrystalline material, a preparation method thereof, and its application in gas molecule detection. A core-shell structure nanocrystal material, the molecular formula of the nanocrystal is CaClF: Bi/Er@CaClF. The surface of the nanocrystal is wrapped with an inert shell layer of CaClF, which modifies the defects on the surface, greatly improves the fluorescence efficiency of the nanocrystal, and makes it have the advantages of good fluorescence signal, high intensity and high detection limit. |