A kind of preparation method of casi2o2n2: ce, tb/eu multi-layer multicolor fluorescent fiber membrane
A fluorescent fiber and spinning solution technology, which is applied in chemical instruments and methods, luminescent materials, heating/cooling fabrics, etc., can solve the problem of decreased emission light efficiency, achieve the effect of reducing secondary absorption and improving luminous efficiency
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Embodiment 1
[0030] Mix 1mL of ultrapure water and 18mL of absolute ethanol; dissolve 0.009g of cerium nitrate, 0.012g of terbium nitrate, and 0.397g of calcium nitrate in the mixed solvent, and then add 0.71mL of TEOS. After continuous stirring for 30min, slowly add 0.9g PVP (molecular weight 1,300,000) and 2.4g PVP (molecular weight 50,000) under high-speed stirring, continue stirring for 6h, until the solution is clear and transparent, to obtain spinning solution A; 0.019g europium nitrate, 0.402g nitric acid Calcium was dissolved in the mixed solvent, and 0.69 mL of TEOS was added. After continuous stirring for 30min, 0.9g PVP (molecular weight 1,300,000) and 2.4g PVP (molecular weight 50,000) were slowly added under high-speed stirring, and stirring was continued for 6h until the solution was clear and transparent, and spinning solution B was obtained.
[0031] Electrospin the obtained precursor solution: at room temperature, the humidity is controlled to 30%, the spinning voltage is ...
Embodiment 2
[0035] Mix 1.5mL of ultrapure water and 18mL of absolute ethanol; dissolve 0.019g of cerium nitrate, 0.022g of terbium nitrate, and 0.697g of calcium nitrate in the mixed solvent, and then add 1.02mL of TEOS. After continuous stirring for 30min, slowly add 1g PVP (molecular weight 1,300,000) and 2g PVP (molecular weight 50,000) under high-speed stirring, continue stirring for 6h, until the solution is clear and transparent to obtain spinning solution A; dissolve 0.03g europium nitrate and 0.613g calcium nitrate In the mixed solvent, another 0.98 mL of TEOS was added. After continuous stirring for 30min, 0.9g PVP (molecular weight 1,300,000) and 2.4g PVP (molecular weight 50,000) were slowly added under high-speed stirring, and stirring was continued for 6h until the solution was clear and transparent, and spinning solution B was obtained.
[0036]The obtained precursor solution was subjected to electrospinning: at room temperature, the humidity was controlled at 30%, the spinn...
Embodiment 3
[0040] Mix 2mL of ultrapure water and 18mL of absolute ethanol; dissolve 0.015g of cerium nitrate, 0.032g of terbium nitrate, and 0.96g of calcium nitrate in the mixed solvent, and then add 1.48mL of TEOS. After stirring continuously for 30 minutes, slowly add 1.2g PVP (molecular weight 1300000) and 1.7g PVP (molecular weight 50000) under high-speed stirring, and continue stirring for 6 hours until the solution is clear and transparent to obtain spinning solution A; 0.05g europium nitrate, 1.102g nitric acid Calcium was dissolved in the mixed solvent, and 1.56mL TEOS was added. After stirring continuously for 30 min, slowly add 1 g PVP (molecular weight 1300000) and 2 g PVP (molecular weight 50000) under high-speed stirring, and continue stirring for 6 h until the solution is clear and transparent to obtain spinning solution B.
[0041] The obtained precursor solution was subjected to electrospinning: at room temperature, the humidity was controlled at 30%, the spinning voltag...
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