Method for preparing NaYF4 type up-conversion materials
A conversion material and basic technology, applied in the field of manufacturing up-conversion luminescent materials, can solve the problems of high technical requirements, complex synthesis components, and difficult to imitate, and achieve the effects of simple preparation process, good reproducibility and low cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0028] The invention provides a method for preparing NaYF 4 :Er x , Yb y (Among them, 0.0014 :Er x , Yb y (Where 0.001
[0029] The preparation method of the present invention includes the following steps:
[0030] 1) A step of preparing a basic solution, that is, a step of obtaining a NaF aqueous solution containing metal ions of Y, Yb, and Er.
[0031] Add NaF and inorganic salts containing Y, Yb, and Er into water, and stir to obtain a NaF aqueous solution containing Y, Yb, and Er metal ions (referred to as "basic solution" in this article), where NaF is in the aqueous solution. The concentration is 0.02-2 mol / L, and relative to 1 mol of NaF, the molar ratios of the metal ions of Y, Yb and Er are in the range of 0.5-1, 0.01-0.5, and 0.001-0.1, respectively.
[0032] For the inorganic salt containing Y, Yb or Er, one or more of nitrate, sulfate, chloride, etc. can be selected, and nitrate is preferred. These inorganic salts and NaF...
Embodiment 1
[0043] Mix 3.3644g (0.0495mol) of yttrium oxide, 0.7882g (0.01mol) of ytterbium oxide and 0.0382g (0.005mol) of erbium oxide into a slurry with distilled water. While heating, add 14mol / L concentrated nitric acid to dissolve until it becomes colorless Transparent solution. 1.6796 (0.1 mol) sodium fluoride was added to 50 mL of deionized water, and electromagnetically stirred until completely dissolved. Add the rare earth metal ion solution to the NaF solution and continue to stir to obtain a mixed solution, add 0.8 g (0.004 mol) polyethylene glycol (PEG200), stir at constant temperature for 10 minutes, and then add 0.3843 g (0.002 mol) of citric acid to obtain a white mixed solution. After 10 minutes, add 48.048g (0.8mol) of urea and continue to stir. After stirring for 10 minutes at constant temperature, add 0.6184g (0.025mol) of boric acid powder, continue stirring for 10 minutes, and then move it into a 50℃ constant temperature water bath to react for 2 hours. Take out 10mL and...
Embodiment 2
[0045] Mix 3.3644g (0.0495mol) of yttrium oxide, 0.7882g (0.01mol) of ytterbium oxide and 0.0382g (0.005mol) of erbium oxide into a slurry with distilled water. While heating, add 14mol / L concentrated nitric acid to dissolve until it becomes colorless Transparent solution. 1.6796 g (0.1 mol) of sodium fluoride was added to 50 mL of deionized water, and electromagnetically stirred until completely dissolved. Add the rare earth ion solution to the NaF solution and continue to stir to obtain a mixed solution, add 0.8 g (0.004 mol) of polyethylene glycol (PEG200), stir at constant temperature for 10 minutes, and then add 0.3843 g (0.002 mol) of citric acid to obtain a white mixed solution. After 10 minutes, add 60.056g (0.8mol) glycine and continue to stir. After stirring at constant temperature for 10 minutes, add 0.6184g (0.025mol) of boric acid powder, continue stirring for 10 minutes, then move to 50℃ constant temperature water bath to react for 2 hours, take out 10mL and load int...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More