Molybdenum oxide nanosheet plugging hollow mesoporous silicon nano material, and preparation method and application thereof
A nano-composite material and mesoporous silicon technology, which can be used in wave energy or particle radiation treatment materials, medical preparations without active ingredients, and medical preparations containing active ingredients, etc., which can solve the problem of low drug loading rate, drug loss, etc. problems, to achieve the effect of increasing treatment efficiency, high loading capacity, and improving curative effect
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Embodiment 1
[0052] (1) Disperse 3g of ammonium molybdate into 30mL of ultrapure water, then add 1mL of hydrochloric acid (concentration: 1mol / L), ultrasonicate for five minutes, disperse 2g of oleylamine into 10mL of cyclohexane, and dissolve the oleylamine dispersion Slowly added to the ammonium molybdate dispersion, stirred magnetically for half an hour, and reacted the product at 200°C for 15 hours. After the reaction, the product was collected and centrifuged, and then washed and collected with chloroform and ethanol to obtain MoOx.
[0053] (2) Disperse the molybdenum dioxide material prepared in step (1) into 50 mL of chloroform solution, and then ultrasonicate the solution for 150 min in an ice bath to process large nanosheets into small fragments and reduce the particle size. After sonication, 500 mg of mPEG-DSPE was added, stirred overnight at room temperature, and chloroform was evaporated by rotary evaporation to obtain a dark brown dry substance, which was washed with ultrapure...
Embodiment 2
[0063] HMONs-NH of the present invention 2 -DOX@MoO x -The method of carrying out the drug release experiment of the PEG drug-carrying system:
[0064] (1) Prepare DOX phosphate buffer solution and acetic acid buffer solution, detect the maximum absorbance value in an ultraviolet spectrophotometer, and fit the DOX standard curve under two pH environments (5.0,7.4);
[0065] (2) 5mg HMONs-NH 2 -DOX@MoO x -The PEG drug-loaded composite material was dissolved in 5 mL of buffer solution, placed in two dialysis bags, and then the dialysis bags were placed in buffer solutions of pH 5.0 and pH 7.4 for shaking, samples were taken at different time points, and fresh buffer was added, A pH-responsive drug release curve was obtained.
[0066] (3) 5mgHMONs-NH 2 -DOX@MoO x -The PEG drug-loaded composite material was dissolved in 5mL of different pH buffer solutions (5.0 and 7.4), placed in a dialysis bag, and then treated with 808nm, 1W / cm 2 The laser was irradiated for 5 minutes, a...
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