A kind of monodisperse hollow Prussian blue nano microsphere, its preparation method and application
A nano-microsphere, Prussian blue technology, applied in the field of nano-materials, can solve the problems of uneven thermal distribution, tumor recurrence and metastasis, incomplete tumor thermal ablation, etc., to achieve good biological safety, ensure high dispersion, excellent light Effects of Thermal Conversion Efficiency and Photothermal Stability
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Embodiment 1
[0051] A preparation method of monodisperse hollow Prussian blue nanospheres, comprising the following steps:
[0052] (1) Add 1 g FeCl 3 ·6H 2 O, 1 g of urea, and 3 g of sodium citrate were uniformly dissolved in 60 g of deionized water, and then 80 g of sodium polyacrylate (molecular weight was 20,000 to 2,000,000, gelatinous at room temperature) was added, stirred evenly, and then transferred to the reaction kettle. Hydrothermal reaction at 180 °C for 3 h, cooled to room temperature, and centrifuged to obtain an orange-yellow solid, which was washed with ethanol and deionized water successively, and then dried at 60 °C to obtain Fe 2 o 3 nanospheres;
[0053] (2) 10 mg of Fe prepared in step (1) 2 o 3 Nanospheres were dispersed into 45 mL of alcohol-water mixed solution (35 mL of ethanol, 10 mL of water), and then 0.1 mL of 0.1 M K 4 [Fe(CN) 6 ] solution, mechanically stirred at a speed of 200 r / min, and after being fully mixed, 5 mL of 6 M HCl was added dropwise usi...
Embodiment 2
[0090] A preparation method of monodisperse hollow Prussian blue nanospheres, comprising the following steps:
[0091] (1) Add 1 g FeCl 3 ·6H 2 O, 0.5 g of urea, and 2 g of trisodium citrate were uniformly dissolved in 60 g of deionized water, then 30 g of sodium polyacrylate was added, stirred evenly, and then transferred to a reactor for hydrothermal reaction at 170 °C for 3 h, cooled to Centrifuge at room temperature to obtain an orange-yellow solid, which is washed successively with ethanol and deionized water, and then dried at 55 °C to obtain Fe 2 o 3 nanospheres;
[0092] (2) 10 mg of Fe prepared in step (1) 2 o 3 Nanospheres were dispersed into 45 mL of alcohol-water mixed solution (35 mL of ethanol, 10 mL of water), and then 0.1 mL of 0.1 M K 4 [Fe(CN) 6 ] solution, mechanically stirred at a speed of 200 r / min, and after being fully mixed, 4 mL of 6 M HCl was added dropwise using a peristaltic pump, ultrasonically reacted at 25 °C for 3 h, centrifuged to obtain...
Embodiment 3
[0096] A preparation method of monodisperse hollow Prussian blue nanospheres, comprising the following steps:
[0097] (1) Add 1 g FeCl 3 ·6H 2 O, 0.25 g of urea, and 4 g of trisodium citrate were uniformly dissolved in 30 g of deionized water, then 40 g of sodium polyacrylate was added, stirred evenly, transferred to a reaction kettle, hydrothermally reacted at 190°C for 3 h, and cooled to After room temperature, it was centrifuged to obtain an orange-yellow solid, which was washed with ethanol and deionized water successively, and then dried at 55 °C to obtain Fe 2 o 3 nanospheres;
[0098] (2) 10 mg of Fe prepared in step (1) 2 o 3 Nanospheres were dispersed into 45 mL of alcohol-water mixed solution (35 mL of ethanol, 10 mL of water), and then 0.2 mL of 0.1 M K 4 [Fe(CN) 6 ] solution, mechanically stirred at a speed of 200 r / min, and after being fully mixed, 5 mL of 8 M HCl was added dropwise using a peristaltic pump, ultrasonically reacted at 25 °C for 5 h, centrif...
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