Multifunctional nuclear shell structure drug carrier material and preparation method thereof
A core-shell structure and carrier material technology, which is applied in the direction of pharmaceutical formulations, preparations for in vivo tests, medical preparations of non-active ingredients, etc., can solve the problems of limiting the application of rare earth luminescent materials, achieve good crystal form, improve purity, Avoid the effect of volatilization of components
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[0023] The following examples describe the present invention in more detail:
[0024] Implementation Process 1: Fe 3 o 4 @nSiO 2 @mSiO 2 @NaYF 4 : Synthesis of Yb, Er Microspheres
[0025] ① Fe 3 o 4 Preparation of nanoparticles
[0026] Using solvothermal method, firstly 1g FeCl 3 ·6H 2 O, 20mL ethylene glycol, 3g anhydrous sodium acetate and 10mL ethylenediamine were mixed and vigorously stirred for 30min to form a transparent solution. Then the obtained solution was transferred to a closed polytetrafluoroethylene-lined stainless steel reactor, and reacted at 200° C. for 12 h. After the reaction, it was naturally cooled to room temperature. The reaction product was washed several times with water and absolute ethanol, and finally dried at 80 °C for 12 h and ground into powder to obtain Fe 3 o 4 Nanoparticles.
[0027] ② Fe 3 o 4 @nSiO 2 Preparation of magnetic microspheres
[0028] core-shell Fe 3 o 4 @nSiO 2 Modified Prepared by sol-gel method. A typ...
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