Preparation method of graphite phase carbon nitride solid phosphor and its application in shallow fingerprint extraction
A technology of graphite phase carbon nitride and fluorescent powder, which is applied in the direction of chemical instruments and methods, applications, nitrogen and non-metallic compounds, etc., can solve the problems of weak fluorescence intensity and low quantum yield, and achieve simple synthesis methods and easy comparison Safe and non-toxic effect on preservation and product
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Embodiment 1
[0023] A preparation method of graphite phase carbon nitride solid fluorescent powder, comprising the steps of:
[0024] a, take 8g of melamine, 10g of sodium chloride and 12g of potassium chloride in a mortar, fully grind and mix evenly for subsequent use;
[0025] b. Transfer the mixture prepared in step a into a crucible, place it in a muffle furnace, and calcine at a high temperature for 1 hour in an air atmosphere, and the calcination temperature is 670° C.;
[0026] c. Then cool to room temperature, crush the calcined block product and disperse it in 0.3mol / l dilute hydrochloric acid, then centrifuge to remove the supernatant; then wash repeatedly, and place the washed product in an oven at 60°C Drying in medium is graphite phase carbon nitride solid phosphor.
Embodiment 2
[0032] A preparation method of graphite phase carbon nitride solid fluorescent powder, comprising the steps of:
[0033] a. Weigh 9g of melamine, 11g of sodium chloride and 13g of potassium chloride in a mortar, grind and mix well for later use.
[0034] b. Transfer the mixed material prepared in step a into a crucible, place it in a muffle furnace, and calcine at a high temperature for 1 hour in an air atmosphere at a calcination temperature of 670°C.
[0035] c. Then cool to room temperature, crush the calcined block product and disperse it in 0.3mol / l dilute hydrochloric acid, then centrifuge to remove the supernatant; then wash repeatedly, and place the washed product in an oven at 60°C Drying in medium is graphite phase carbon nitride solid phosphor.
[0036] Application examples of graphitic carbon nitride solid phosphors for the display of fingerprints on the surface of different objects:
[0037] Select the mouse, cigarette case, can, and glass as the fingerprint car...
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