Broad ultraviolet or yellow green light conversion to red blue light nanometer material and its preparation method
A nanomaterial, yellow-green light technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of affecting the light transmission characteristics of agricultural film, high energy consumption and cost, oxidation and decomposition, etc., and achieve good coordination effect and sensitization effect. , High chemical and optical stability, the effect of improving luminous intensity
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Embodiment 1
[0044] 3.77g Y 2 o 3 and 0.6336g Eu 2 o 3Dissolve in concentrated nitric acid under magnetic stirring, distill off water and excess nitric acid under reduced pressure at 70°C, then add 30ml of ethanol and stir to obtain a clear and transparent solution, add 2.00g of silica airgel, stir magnetically at 65°C for 90min to obtain a transparent solution Sol, 80 ℃ of stirring under reduced pressure distillation to remove ethanol to obtain powder solid, transfer to muffle furnace 600 ℃ of sintering 3h to obtain primary product, then it is uniformly mixed in the ethanol solution of 30ml rhodamine B (10 -7 mol / ml), ultrasonically disperse for 20 minutes, and distill under reduced pressure at 80°C to obtain the target product. The TEM image of the sample is shown in Figure 1, the excitation spectrum of the sample under monitoring at 585nm is shown in Figure 2, the emission spectrum of the sample excited at 263nm is shown in Figure 3, the emission spectrum of the sample excited at 305...
Embodiment 2
[0046] 3.77g Y 2 o 3 and 0.6336g Eu 2 o 3 Dissolve in concentrated hydrochloric acid under magnetic stirring, distill off water and excess hydrochloric acid under reduced pressure at 80°C, then add 30ml of ethanol and stir to obtain a clear and transparent solution, add 2.00g of silica airgel, stir magnetically at 65°C for 10min, then Ultrasonic dispersion for 20 minutes, magnetic stirring at 65°C for 30 minutes to obtain a transparent sol, stirring at 80°C to remove ethanol under reduced pressure to obtain a powder solid, transfer to a muffle furnace for sintering at 600°C for 3 hours to obtain a primary product, and then uniformly mix it in 30ml rhodamine Ethanol solution of B (10 -7 mol / ml), ultrasonically disperse for 10 minutes, and distill under reduced pressure at 80°C with stirring to obtain the target product.
Embodiment 3
[0048] 3.77g Y 2 o 3 and 0.6336g Eu 2 o 3 Dissolve in concentrated hydrochloric acid under magnetic stirring, distill off water and excess hydrochloric acid at 70°C under reduced pressure, then add 30ml of NaCl (0.1955g) ethanol solution, add 2.00g of silica airgel, and stir magnetically at 65°C for 10min, Then ultrasonically disperse for 20 minutes, stir magnetically at 65°C for 30 minutes to obtain a transparent sol, remove ethanol by vacuum distillation under stirring at 80°C to obtain a powder solid, transfer to a muffle furnace for sintering at 600°C for 3 hours to obtain a primary product, and then mix it uniformly in 30ml of Rodin A solution of Ming B in ethanol (10 -7 mol / ml), ultrasonically disperse for 10 minutes, and distill under reduced pressure at 80°C with stirring to obtain the target product.
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