Method for preparing CaF2:Eu<3+> luminescent nano material with enhanced fluorescence intensity and nano material
A technology of nanomaterials and fluorescence enhancement, applied in the field of nanomaterials, can solve the problems of high biological toxicity, high light transmittance, low refractive index, etc., achieve good fluorescence performance, control the number of feeding, and uniform appearance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0017] Embodiment 1: prepare CaF 2 :5%Eu 3+ Nanocrystalline
[0018] Accurately weigh 0.64mmol of Ca(CF 3 COO) 2 and 0.1mmol Eu(CF 3 COO) 3 Add it into a three-necked flask containing 40mmol oleic acid (OA) and 40mmol octadecene (ODE), stir at 70°C to dissolve it completely, heat up to 110°C and vacuumize for 30min to remove the moisture present in the system;
[0019] After heating up to 300°C for 20 minutes, 0.63 mmol of Ca(CF 3 COO) 2 Add it to the flask, react at 300°C for 20min, and then continue to add 0.63mmol of Ca(CF 3 COO) 2 In a flask, react at 300°C for 20min.
[0020] Cool to room temperature, then add ethanol to the generated nanoparticles, centrifuge, add cyclohexane to the obtained nanoparticles to clean the residual reactants, then precipitate with ethanol, centrifuge, wash twice in this way, and ultrasonically disperse in cyclohexane Stored in the middle, that is, CaF 2 :5%Eu 3+ nanoparticles.
Embodiment 2
[0021] Embodiment 2: prepare CaF 2 :10%Eu 3+ Nanocrystalline
[0022] Accurately weigh 0.6mmol of Ca(CF 3 COO) 2 and 0.2mmol of Eu(CF 3 COO) 3 Add it into a three-necked flask containing 40mmol oleic acid (OA) and 40mmol octadecene (ODE), stir at 70°C to dissolve it completely, raise the temperature to 110°C and apply vacuum for 30min to remove the moisture that may exist in the system.
[0023] Then the temperature was raised to 300°C for 20 minutes, and 0.6 mmol of Ca(CF 3 COO) 2 Add it into the flask, react at 300°C for 20min, and continue to add 0.6mmol of Ca(CF 3 COO) 2 In the flask, react at 300°C for 20min.
[0024] Cool to room temperature, then add ethanol to the generated nanoparticles, centrifuge, add cyclohexane to the obtained nanoparticles to clean the residual reactants, then precipitate with ethanol, centrifuge, wash twice in this way, and ultrasonically disperse in cyclohexane Stored in the middle, that is, CaF 2 :10Eu 3+ nanoparticles.
Embodiment 3
[0025] Embodiment 3: prepare CaF 2 :20%Eu 3+ Nanocrystalline
[0026] Accurately weigh 0.54mmol of Ca(CF 3 COO) 2 and 0.4mmol of Eu(CF 3 COO) 3 Add it into a three-necked flask containing 40mmol oleic acid (OA) and 40mmol octadecene (ODE), stir at 70°C to dissolve it completely, raise the temperature to 110°C and apply vacuum for 30min to remove the moisture that may exist in the system.
[0027] Then the temperature was raised to 300°C for 20 minutes and a certain amount of Ca(CF 3 COO) 2 (0.53mmol) into the flask, reacted at 300°C for 20min, then continued to add 0.53mmol Ca(CF 3 COO) 2 In the flask, react at 300°C for 20min.
[0028] Cool to room temperature, then add ethanol to the generated nanoparticles, centrifuge, add cyclohexane to the obtained nanoparticles to clean the residual reactants, then precipitate with ethanol, centrifuge, wash twice in this way, and ultrasonically disperse in cyclohexane Stored in the middle, that is, CaF 2 :20%Eu 3+ nanoparticl...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More