Method for preparing Na3YSi2O7-based rare-earth ion activated fluorescent material
A technology of rare earth ions and fluorescent materials, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of long calcination time, long time, high energy consumption, and achieve the effects of rich pore structure, low decomposition temperature and large specific surface area
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Embodiment 1
[0035] Weigh 0.70g of yttrium nitrate hexahydrate and 0.04g of europium nitrate hexahydrate and dissolve them in 50ml of deionized water containing oleic acid, wherein the volume ratio of oleic acid to deionized water in deionized water containing oleic acid is 1:50, and then dropwise add 0.2 150 mL of mol / L sodium carbonate solution to obtain a mixed system. Weigh 0.35g attapulgite (SiO 2 content 57%), it was added to 1.0mol / L hydrochloric acid solution, stirred at 35°C for 0.5h, and ultrasonically dispersed in 30mL oleic acid-absolute ethanol solution, wherein the volume ratio of anhydrous ethanol to oleic acid was 20 : 1. Add the dispersed attapulgite into the above mixing system, and stir for 12 hours at a constant temperature of 20°C. Wash by centrifugation at 7000rpm for 3 times, dry in an oven at 60°C for 12h, and then calcinate at 800°C for 1h at a heating rate of 5°C / min to obtain the product. The obtained product emits red fluorescence under the irradiation of an ul...
Embodiment 2
[0037] Weigh 0.36g of anhydrous yttrium chloride and 0.03g of anhydrous europium chloride and dissolve them in 50ml of deionized water containing linoleic acid, wherein the volume ratio of linoleic acid to deionized water in deionized water containing linoleic acid is 1:30 , and 50 mL of 0.5 mol / L sodium carbonate solution was added dropwise thereto to obtain a mixed system. Weigh 0.37g sepiolite (SiO 2 Content 54%), add it into 0.8mol / L hydrochloric acid solution, stir at 25°C for 1 hour, and then ultrasonically disperse it in 35mL linoleic acid-absolute ethanol solution, wherein, the volume of absolute ethanol and linoleic acid The ratio is 30:1, add the dispersed sepiolite into the above mixing system, and stir for 8 hours at a constant temperature of 40°C. Centrifuge and wash 3 times at 8000rpm, dry in an oven at 70°C for 9h, and then calcinate at 600°C for 3h at a heating rate of 4°C / min to obtain the product. The obtained product emits red fluorescence under the irradia...
Embodiment 3
[0039] Weigh 0.27g of yttrium acetate tetrahydrate and 0.06g of europium acetate tetrahydrate and dissolve them in 50ml of deionized water containing linolenic acid, wherein the volume ratio of linolenic acid to deionized water in the deionized water containing linolenic acid is 1:70, and then drop Add 25 mL of 1.0 mol / L sodium carbonate solution to obtain a mixed system. Weigh 0.21g diatomaceous earth (SiO 2 Content 95%), add it into 0.05mol / L hydrochloric acid solution, stir at 15°C for 1.5h, and then ultrasonically disperse it in 25mL linolenic acid-absolute ethanol mixed system, wherein the volume ratio of anhydrous ethanol to linolenic acid 40:1, the dispersed diatomaceous earth was added to the above mixing system, and stirred at a constant temperature of 60°C for 6h. Wash by centrifugation at 9000rpm for 3 times, dry in an oven at 80°C for 6h, and then calcinate at 700°C for 2h at a heating rate of 2°C / min to obtain the product. The obtained product emits red fluoresce...
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