A coated modified aluminate luminescent material and its coating method
A technology of luminescent materials and aluminates, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of difficult expansion of industrial production, high temperature, unfavorable industrial production, etc., and achieve the effect of simple process and good water resistance
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Embodiment 1
[0034] Prepare 100 ml of an ethanol solution with a water-ethanol volume ratio of 1:1, and divide it into two portions of 50 ml each. 0.02 mol of octahydroxyquinoline was dissolved in one of the above solutions. Weigh 0.003 mol of sodium oxalate and an appropriate amount of ammonium acetate and dissolve them in a small amount of distilled water to prepare sodium oxalate solution and ammonium acetate solution. Take again by weighing 0.003 mole of strontium nitrate and 0.006 mole of aluminum nitrate, 0.00006 mole of europium nitrate is dissolved in the water-ethanol solution of above-mentioned another part 50mL, then add the octahydroxyquinoline solution and the sodium oxalate solution that have made, and then use Ammonium acetate was used to adjust the pH to about 6, and a precipitate appeared. Stir at room temperature for 3 hours. After the reaction was complete, the reaction precipitate was fully washed with distilled water and ethanol. After suction filtration, dry at room ...
Embodiment 2
[0036] Prepare 100 ml of an ethanol solution with a water-ethanol volume ratio of 1:1, and divide it into two portions of 50 ml each. 0.02 mol of octahydroxyquinoline was dissolved in one of the above solutions. Weigh 0.003 moles of sodium oxalate and an appropriate amount of ammonium acetate and dissolve them in a small amount of distilled water to prepare sodium oxalate solution and ammonium acetate solution, then weigh 0.003 moles of calcium nitrate and 0.006 moles of aluminum nitrate, and dissolve 0.00006 moles of europium nitrate in the above Add the octahydroxyquinoline solution and sodium oxalate solution to a 50mL water-ethanol solution, adjust the pH to about 6 with ammonium acetate, and precipitate at room temperature for 3 hours. After the reaction is complete, , and the reaction precipitate was thoroughly washed with distilled water and ethanol. After suction filtration, dry at room temperature for 5-7 hours to obtain the precursor of calcium aluminate luminescent...
Embodiment 3
[0038]Prepare 100 ml of an ethanol solution with a water-ethanol volume ratio of 1:1, and divide it into two portions of 50 ml each. 0.02 mol of octahydroxyquinoline was dissolved in one of the above solutions. Weigh 0.003 moles of sodium oxalate and an appropriate amount of ammonium acetate and dissolve them in a small amount of distilled water to prepare sodium oxalate solution and ammonium acetate solution, then weigh 0.003 moles of barium nitrate and 0.006 moles of aluminum nitrate, and dissolve 0.00006 moles of europium nitrate in the above other Add the octahydroxyquinoline solution and sodium oxalate solution to a 50mL water-ethanol solution, adjust the pH to about 6 with ammonium acetate, and precipitate at room temperature for 3 hours. After the reaction is complete, , and the reaction precipitate was thoroughly washed with distilled water and ethanol. After suction filtration, dry at room temperature for 5-7 hours to obtain the precursor of aluminate luminescent mat...
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