Colloid-coating fluorescent powder and preparation method thereof
A technology of mixing phosphors and phosphors, applied in chemical instruments and methods, luminescent materials, etc., to achieve the effects of improving stability, improving luminous efficiency, and easy conditions
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Embodiment 1
[0031] Weigh 0.0412g HAuCl 4 4H 2 Dissolve O in 100mL ethanol to make 0.001mol / L HAuCl 4 solution. Weigh 2.1292g Zn(CH 3 COO) 2 2H 2 O, 0.1125g Al(NO 3 ) 3 9H 2 O and 0.6mL C 2 h 7 NO is placed in the container, add 2mL of 0.001mol / L HAuCl 4 solution, and then added ethylene glycol methyl ether to 50mL, stirred in a 60°C water bath for 4h to obtain a clear precursor solution, and aged the obtained precursor solution in a 60°C oven for 70h to form a uniform colloid.
[0032] Take 4.0g Y 2 o 3 : Eu phosphor, add 5mL of absolute ethanol, stir at room temperature for 1h, filter and dry in an oven at 40°C for 15h. in Y 2 o 3 : Add 5 mL of the prepared colloid to the Eu phosphor, magnetically stir in a water bath at 15°C for 5h, then dry in an oven at 100°C for 7h, and then keep warm in a muffle furnace at 800°C for 2h to obtain a colloid-coated phosphor.
[0033] figure 1 It is the colloid-coated fluorescent powder and Y 2 o 3: Comparison of emission spectra of E...
Embodiment 2
[0035] Weigh 0.0052g H 2 PtCl 6 ·6H 2 Dissolve O in 100mL ethanol to make 0.0001mol / L H 2 PtCl 6 solution. Weigh 2.4810g ZnCl 2 2H 2 O, 0.1448g AlCl 3 ·6H 2 O and 1.5mL C 4 h 11 NO 2 Place in a container, add 15mL of 0.0001mol / L H 2 PtCl 6 solution, and then add a mixed solution of ethanol and water with a volume ratio of 3:1 to 50mL, and stir in a water bath at 70°C for 8h to obtain a uniform precursor solution, and age the obtained precursor solution in an oven at 60°C After 70 hours, a uniform colloid was formed.
[0036] Take 1.0g Y 2 o 3 : Eu phosphor, add 3mL of absolute ethanol, stir at room temperature for 5h, filter and dry in an oven at 60°C for 15h. in Y 2 o 3 : Add 3mL of the prepared colloid to the Eu phosphor, magnetically stir in a water bath at 40°C for 2h, dry in an oven at 90°C for 5h, and then keep warm in a muffle furnace at 1000°C for 0.5h to obtain a colloid-coated phosphor.
Embodiment 3
[0038] Weigh 4.4328g PdCl 2 Dissolve in 250mL deionized water to make 0.1mol / L PdCl 2 solution. Weigh 0.5460g Zn(CH 3 COO) 2 2H 2 O, 0.0047g Al(NO 3 ) 3 9H 2 O and 0.4mL C 6 h 15 o 3 N is placed in the container, add 1mL of 0.1mol / L H 2 PtCl 6 solution, and then add a mixed solution of ethanol and water with a volume ratio of 4:1 to 50mL, and after stirring for 5h in a water bath at 40°C, a uniform precursor solution is obtained, and the obtained precursor solution is aged in an oven at 40°C After 90 hours, a uniform colloid was formed.
[0039] Take 12.0g Y 2 o 3 : Eu phosphor, add 20mL of absolute ethanol, stir at room temperature for 20h, filter and dry in an oven at 90°C for 1h. in Y 2 o 3 : Add 15 mL of the prepared colloid to the Eu phosphor, stir magnetically in a 70°C water bath for 20h, then place it in a 40°C oven for 30h, and then keep it in a muffle furnace at 400°C for 6h under carbon reduction to obtain a colloid-coated phosphor .
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