Preparation method of small particle size ferroferric oxide magnetic nano particles
A technology of magnetic nanoparticles and ferric oxide, applied in iron oxide/iron hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of easy agglomeration of magnetic particles, wide particle size distribution, and difficulty in preparing magnetic nanoparticles.
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Embodiment 1
[0021] (1) Put 60mL of ethanol, 10mL of distilled water, and 20mL of n-hexane in a three-neck flask, stir for 10min, then add 1g of ferric chloride and 3.65g of sodium oleate, then stir in an oil bath at 75°C for 4h, cool to room temperature, and separate the liquids Wash and dry in vacuum at 60°C for 12 hours in a watch glass.
[0022] (2) 4g of iron oleate, 25mL of 1-octadecene, and 0.65g of oleic acid are ultrasonically dissolved and poured into a 100mL three-neck flask, distilled under nitrogen protection, first heated to about 100°C, and then heated at 5°C / min to 330°C, keep the temperature for 30min, cool to room temperature, separate and wash with ethanol, and disperse in 30mL cyclohexane.
Embodiment 2
[0024] (1) Put 60mL of ethanol, 10mL of distilled water, and 20mL of n-hexane in a three-neck flask, stir for 10min, then add 1g of ferric chloride and 3.65g of sodium oleate, then stir in an oil bath at 75°C for 4h, cool to room temperature, and separate the liquids Wash and dry in vacuum at 60°C for 12 hours in a watch glass.
[0025] (2) 4g of iron oleate, 20mL of 1-octadecene, and 0.65g of oleic acid are ultrasonically dissolved and poured into a 100mL three-neck flask, distilled under nitrogen protection, first heated to about 100°C, and then heated at 5°C / min to 330°C, keep the temperature for 1h, cool to room temperature, separate and wash with ethanol, and disperse in 30mL cyclohexane.
Embodiment 3
[0027] (1) Put 60mL of ethanol, 10mL of distilled water, and 20mL of n-hexane in a three-neck flask, stir for 10min, then add 1g of ferric chloride and 3.65g of sodium oleate, then stir in an oil bath at 75°C for 4h, cool to room temperature, and separate the liquids Wash and dry in vacuum at 60°C for 12 hours in a watch glass.
[0028] (2) 4g of ferric oleate, 15mL of 1-octadecene, and 0.65g of oleic acid were ultrasonically dissolved and poured into a 100mL three-neck flask, distilled under nitrogen protection, first heated to about 100°C, and then heated at 5°C / min to 330°C, keep the temperature for 2h, cool to room temperature, separate and wash with ethanol, and disperse in 30mL cyclohexane.
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