Double perovskite-type molybdate red phosphor and preparation method thereof
A technology of red phosphor and double perovskite, applied in chemical instruments and methods, luminescent materials, etc., can solve problems such as abnormal grain growth, powder agglomeration, introduction of impurities, etc., achieve enhanced luminous intensity, short production cycle, high intensity effect
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Embodiment 1
[0040] Embodiment 1: preparation (Ba 0.95 , Eu 0.05 ) 2 MgO 6 Phosphor powder
[0041] Concrete preparation method comprises the following steps:
[0042] (1) According to (Ba 0.95 , Eu 0.05 ) 2 MgO 6 The stoichiometric ratio of weighing raw materials: Eu 2 o 3 1.072g, Ba(NO 3 ) 2 23.076g, Mg(NO3 ) 2 ·6H 2 O 15.625g, H 8 MON 2 o 4 11.941g; the purity of raw materials is above analytical purity;
[0043] (2) At room temperature, dissolve raw material Eu with dilute nitric acid 2 o 3 , stirred until completely dissolved, then heated for 30 minutes, evaporated excess nitric acid to obtain solution A, and Ba(NO 3 ) 2 , Mg(NO 3 ) 2 4H 2 O was added to solution A, while adding 0.616g of KNO 3 , stir and mix evenly to obtain solution B;
[0044] (3) At room temperature, the H 8 MON 2 o 4 and 106.804g EDTA (C 10 h 16 N 2 o 8 ) were dissolved together in ammonia water, then added to the solution B obtained in step (2), stirred and mixed evenly to obtain ...
Embodiment 2
[0053] Embodiment 2: preparation (Ba 0.99 , Eu 0.01 ) 2 MgO 6 Phosphor powder
[0054] Concrete preparation method comprises the following steps:
[0055] (1) According to (Ba 0.99 , Eu 0.01 ) 2 MgO 6 The stoichiometric ratio of weighing raw materials: Eu 2 o 3 0.215g, Ba(NO 3 ) 2 24.105g, Mg(NO 3 ) 2 ·6H 2 O 15.662g, H 8 MON 2 o 4 16.970g; the purity of raw materials is above analytical purity;
[0056] (2) At room temperature, dissolve raw material Eu with dilute nitric acid 2 o 3 , stirred until completely dissolved, then heated for 30 minutes, evaporated excess nitric acid to obtain solution A, and Ba(NO 3 ) 2 , Mg(NO 3 ) 2 4H 2 O was added to solution A, while adding 0.124 g of KNO 3 , stir and mix evenly to obtain solution B;
[0057] (3) At room temperature, the H 8 MON 2 o 4 and 107.059g EDTA (C 10 h 16 N 2 o 8 ) were dissolved together in ammonia water, then added to the solution B obtained in step (2), stirred and mixed evenly to ob...
Embodiment 3
[0066] Embodiment 3: preparation (Ba 0.9 , Eu 0.1 ) 2 MgO 6 Phosphor powder
[0067] Concrete preparation method comprises the following steps:
[0068] (1) According to (Ba 0.9 , Eu 0.1 ) 2 MgO 6 The stoichiometric ratio of weighing raw materials, Eu 2 o 3 2.139g, Ba(NO3) 221.796g, Mg(NO 3 ) 2 ·6H 2 O 15.578g, H 8 MON 2 o 4 11.905g; the purity of raw materials is above analytical purity;
[0069] (2) At room temperature, dissolve raw material Eu with dilute nitric acid 2 o 3 , stirred until completely dissolved, then heated for 35 minutes, evaporated excess nitric acid to obtain solution A, mixed Ba(NO3)2, Mg(NO 3 ) 2 4H 2 O was added to solution A, while adding 1.229 g of KNO 3 , stir and mix evenly to obtain solution B;
[0070] (3) At room temperature, the H 8 MON 2 o 4 and 79.864g EDTA (C 10 h 16 N 2 o 8 ) were dissolved together in ammonia water, then added to the solution B obtained in step (2), stirred and mixed evenly to obtain solution C;...
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