Preparation method of non-rare earth composite upconversion luminescent material
A luminescent material, non-rare earth technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problem that the research work of non-rare earth composite upconversion luminescent materials has not been reported, and achieve the effect of reducing consumption and dependence
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[0026] The non-rare earth composite up-conversion luminescent material and the preparation method thereof of the present invention specifically comprise the following steps:
[0027] Step 1: Weigh glass powder, CaF 2 and BaF 2 , the mass ratio of the three is 0.1 to 7.5: 0.5 to 4: 0.5 to 4; the glass powder contains at least four elements: O, Na, Al and Si;
[0028] Step 2: at room temperature, the glass powder of formula quantity is dissolved in the HF that massfraction is 40%, obtains transparent solution;
[0029] Step 3: Simultaneously add the formula amount of CaF to the transparent solution 2 and BaF 2 , after continuous stirring for 6h, a white turbid solution was obtained;
[0030] Step 4: Pour the turbid solution into a hydrothermal synthesis tank, conduct a hydrothermal reaction at 120-200 °C for 12-48 h, and then cool naturally to room temperature;
[0031] Step 5: centrifuge the product obtained in step 4 to obtain a solid product, dry the solid product at 40-...
Embodiment 1
[0033] Dissolve 4.5 g of glass powder in 30 mL of 40% HF at room temperature to obtain a transparent solution, and simultaneously add 2.0 g of CaF 2 and 2.0 g BaF 2 , after continuous stirring for 6 h, a white turbid liquid was obtained. Pour the turbid liquid into a hydrothermal synthesis tank, keep it at 180 °C for 24 h, cool it down to room temperature naturally, centrifuge the obtained product to obtain a solid product, and dry the solid product at 50 °C Then put it into a temperature-programmed furnace, raise the temperature to 500 °C at a rate of 5 °C / min, keep it warm for 3 h, and grind it after cooling to obtain a non-rare earth composite up-conversion luminescent material.
[0034] figure 1 It is the three-dimensional spectrogram of the non-rare earth composite up-conversion luminescent material obtained in Example 1. Depend on figure 1 It can be seen that it has obvious light absorption in the visible light band of 550-640 nm, and has obvious light emission in t...
Embodiment 2
[0039] Dissolve 7.5 g of glass powder in 30 mL of 40% HF at room temperature to obtain a transparent solution, and simultaneously add 1.0 g of CaF 2 and 4.0 g BaF 2, after continuous stirring for 6 h, a white turbid liquid was obtained. Pour the turbid liquid into a hydrothermal synthesis tank, keep it at 120 °C for 48 h, cool it down to room temperature naturally, centrifuge the obtained product to obtain a solid product, and dry the solid product at 50 °C Then put it into a temperature-programmed furnace, raise the temperature to 500 °C at a rate of 5 °C / min, keep it warm for 3 h, and grind it after cooling to obtain a non-rare earth composite up-conversion luminescent material.
[0040] The non-rare earth composite up-conversion luminescent material prepared in Example 2 has similar luminescent properties to the material obtained in Example 1.
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