Alkali metal enhanced bismuth titanate-based up-conversion fluorescent material and preparation method thereof
A fluorescent material, bismuth titanate technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of affecting luminous efficiency, deterioration, easy to absorb moisture, etc., and achieve the effect of good chemical stability, not easy to absorb water, and enhanced performance
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Embodiment 1
[0039] By Bi 3.46 Ho 0.04 Yb 0.5 Ti 3 o 12 :0.02Li as an example, the method is a chemical solution method, mainly including: S1, the preparation of the precursor solution; S2, gel preparation, S3 three steps of sintering, the specific steps are as follows:
[0040] S1. Preparation of precursor solution:
[0041] According to the chemical formula Bi of the upconverting phosphor 3.46 Ho 0.04 Yb 0.5 Ti 3 o 12 : 0.02Li, take by weighing 3.5086g bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O), 0.0318g holmium nitrate pentahydrate (Ho(NO 3 ) 3 ·5H 2 O), 0.4205g ytterbium nitrate hexahydrate (Yb(NO 3 ) 3 ·6H 2 O), 0.0028g lithium nitrate (LiNO 3 ) into a beaker as the precursors of Bi, Ho, Yb, and Li respectively, add 15ml of glacial acetic acid solution to the beaker, heat and stir it on a constant temperature magnetic stirrer, the heating temperature is 60°C, the holding time is 20min, cool to room temperature to form A liquid;
[0042] Tetrabutyl titanate (...
Embodiment 2
[0051] By Bi 3.46 Ho 0.04 Yb 0.5 Ti 3 o 12 :0.05Li as an example, the specific steps are as follows:
[0052] S1. Preparation of precursor solution: according to the chemical formula Bi of the up-conversion phosphor 3.46 Ho 0.04 Yb 0.5 Ti 3 o 12 : 0.05Li, weigh 3.5086g bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O), 0.0318g holmium nitrate pentahydrate (Ho(NO 3 ) 3 ·5H 2 O), 0.4205g ytterbium nitrate hexahydrate (Yb(NO 3 ) 3 ·6H 2 O), 0.0069g lithium nitrate (LiNO 3 ) into a beaker as the precursors of Bi, Ho, Yb, and Li respectively, add 15ml of glacial acetic acid solution to it, place it on a constant temperature magnetic stirrer to heat and stir, the heating temperature is 60°C, the holding time is 15min, cool to room temperature to form A solution;
[0053] Tetrabutyl titanate (Ti(OC 4 h 9 ) 4 ) as a Ti precursor, 1.85ml tetrabutyl titanate was added to 15ml ethylene glycol methyl ether, and stirred at a speed of 800r / min for 2min at room tempera...
Embodiment 3
[0058] with Bi 3.46 Ho 0.04 Yb 0.5 Ti 3 O 12 :0.05Na as an example, the specific steps are as follows:
[0059] S1. Preparation of precursor solution: according to the chemical formula Bi of the up-conversion phosphor 3.46 Ho 0.04 Yb 0.5 Ti 3 O 12 : 0.05Na, weigh 3.5086g bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O), 0.0318g holmium nitrate pentahydrate (Ho(NO 3 ) 3 ·5H 2 O), 0.4205g ytterbium nitrate hexahydrate (Yb(NO 3 ) 3 ·6H 2 O), 0.0085g sodium nitrate (NaNO 3 ) into a beaker as the precursors of Bi, Ho, Yb, and Na respectively, add 15ml of glacial acetic acid solution to it, place it on a constant temperature magnetic stirrer, heat and stir, the heating temperature is 60°C, the holding time is 15min, cool to room temperature to form A solution;
[0060] Tetrabutyl titanate (Ti(OC 4 h 9 ) 4 ) as a Ti precursor, 1.85ml tetrabutyl titanate was added to 15ml ethylene glycol methyl ether, and stirred at a speed of 800r / min for 2min at room temperat...
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