A rare earth cerium ion doped rare earth pyrosilicate small-sized nanocrystal and its preparation method and application
A technology of ion doping and pyrosilicate, applied in nanotechnology, nano-optics, nanotechnology, etc., can solve the problem of uncontrollable nanocrystal shape and size, different size of nanocrystal shape, uneven doping, etc. problem, to achieve the effect of batch preparation of size, uniform shape and uniform doping
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Embodiment 1
[0040] Embodiment 1 prepares Lu of 30~50nm 1.999 Si 2 o 7 :0.001Ce 3+ Nanocrystalline
[0041] (1) Preparation of 10-30nm template silica (SiO2 ): Measure 10mL deionized water, 1mL absolute ethanol, 0.125mL ammonia water (NH 3 ·H 2 O), and take by weighing 1.2g hexadecyltrimethylammonium bromide (C 16 h 33 (CH 3 ) 3 NBr, CTAB) in a beaker, set the oil bath temperature to 40°C, add 0.25mL orthosilicate ethyl (Si(OC) dropwise while stirring 2 h 5 ) 4 ), reacted for 2 hours, centrifuged, washed, and dried to obtain 10-30nm template SiO 2 ;
[0042] (2) Then weigh 0.0601g of prepared template SiO 2 , 4.5006g CTAB, measure 100mL deionized water, mix in a 250mL single-necked flask, and ultrasonically disperse for 1h;
[0043] (3) Weigh 1.5004g urea (CH 4 N 2 O), measure the prepared 9.995mL 0.1M lutetium nitrate (Lu(NO 3 ) 3 ) solution, 0.025mL 0.02M cerium nitrate (Ce(NO 3 ) 3 ) solution in the above-mentioned single-necked flask, and then put the single-necked ...
Embodiment 2
[0045] Embodiment 2 prepares Lu of 30~50nm 1.9 Si 2 o 7 :0.1Ce 3+ Nanocrystalline
[0046] (1) Preparation of 10-30nm template silica: Measure 10mL of deionized water, 1mL of absolute ethanol, 0.125mL of ammonia water, and weigh 1.2g of CTAB into a beaker, set the oil bath temperature to 40°C, and stir 0.25mL Si(OC 2 h 5 ) 4 , after 2 hours of reaction, centrifuge, wash, and dry to obtain 10-30nm template SiO 2 ;
[0047] (2) Then weigh 0.0601g of prepared template SiO 2 , 4.5006g CTAB, measure 100mL deionized water, mix in a 250mL single-necked flask, and ultrasonically disperse for 1h;
[0048] (3) Weigh 1.5004g CH 4 N 2 O, measure the prepared 9.5mL 0.1M Lu(NO 3 ) 3 solution, 2.5mL 0.02MCe(NO 3 ) 3 Put the solution in the above-mentioned single-necked flask, and then place the single-necked flask in an 85°C oil bath to react for 12 hours while stirring, after precipitation, centrifugation, and washing, put it in a drying oven at 75°C to dry to obtain the prec...
Embodiment 3
[0050] Embodiment 3 prepares Lu of 30~50nm 1.99 Si 2 o 7 :0.01Ce 3+ Nanocrystalline
[0051] (1) Preparation of 10-30nm template silica: measure 10mL deionized water, 1mL absolute ethanol, 0.125mL NH 3 ·H 2 O, and weighed 1.2g CTAB in a beaker, set the oil bath temperature to 40°C, and added 0.25mL Si(OC 2 h 5 ) 4 , after 2 hours of reaction, centrifuge, wash, and dry to obtain 10-30nm template SiO 2 ;
[0052] (2) Then weigh 0.0601g of prepared template SiO 2 , 4.5006g CTAB, measure 100mL deionized water, mix in a 250mL single-necked flask, and ultrasonically disperse for 1h;
[0053] (3) Weigh 1.5004g CH 4 N 2 O, measure the prepared 9.95mL 0.1M Lu(NO 3 ) 3 solution, 0.25mL0.02M Ce(NO 3 ) 3 Put the solution in the above-mentioned single-necked flask, and then place the single-necked flask in an 85°C oil bath to react for 12 hours while stirring, after precipitation, centrifugation, and washing, put it in a drying oven at 75°C to dry to obtain the precursor po...
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