Magnetic nano material and preparation method thereof and application
A magnetic nanometer and nanometer zero-valent iron technology, applied in the field of nanomaterials, can solve the problems of difficult recovery of adsorbents, secondary pollution of water bodies, inability to realize recycling, etc., and achieve the effect of easy and rapid separation
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Embodiment 1
[0061] This embodiment provides a magnetic nanomaterial Fe@SiO 2 @C60, which is prepared by the following preparation method:
[0062] Step 1, dissolve 2.4g of ferric chloride in ethanol, add 3g of sodium hydroxide and 6mL of hydrazine hydrate (80%), stir evenly, then transfer to a 50mL reactor, seal and react at 80°C for 10h, then cool After reaching room temperature, the product was washed three times with deionized water and absolute ethanol successively to remove unreacted ferric chloride and organic matter, etc., and finally the product was placed in a vacuum drying oven and dried at 50°C to obtain nano zero Valence iron;
[0063] Step 2: Take 200mg of the nanometer zero-valent iron in Step 1, place it in 0.1mol / L hydrochloric acid solution for 1min, and wash it quickly with deionized water to neutrality (pH test paper test); transfer the product into a round bottom Add 160mL of absolute ethanol, 40mL of water, 2mL of ammonia water (28%), and 2mL of ethyl orthosilicate ...
Embodiment 2
[0140] This embodiment provides a magnetic nanomaterial Fe@SiO 2 @C60, which is prepared by the following preparation method:
[0141] Step 1: Dissolve 2.4g of ferric chloride in ethanol, add 3.6g of sodium hydroxide and 7.2mL of hydrazine hydrate (80%), stir evenly, then transfer to a 50mL reactor and seal the reaction at 75°C for 8.5h , then cooled to room temperature, and then the product was washed three times with deionized water and absolute ethanol successively to remove unreacted ferric chloride and organic matter, etc., and finally the product was placed in a vacuum drying oven and dried at 45°C. Get nanometer zero valent iron;
[0142] Step 2, take 180mg of nano-zero-valent iron in step 1, place it in 0.1mol / L hydrochloric acid solution for 0.5min, and use deionized water to quickly wash it to neutrality (pH test paper test); transfer the product to a circle Add 150mL of absolute ethanol, 35mL of water, 1mL of ammonia water (28%), and 1mL of ethyl orthosilicate to ...
Embodiment 3
[0146] This embodiment provides a magnetic nanomaterial Fe@SiO 2 @C60, which is prepared by the following preparation method:
[0147] Step 1, dissolve 2.4g of ferric chloride in ethanol, add 3g of sodium hydroxide and 6mL of hydrazine hydrate (80%), stir evenly, then transfer to a 50mL reactor, seal and react at 85°C for 12h, then cool After reaching room temperature, the product was washed three times with deionized water and absolute ethanol successively to remove unreacted ferric chloride and organic matter, etc., and finally the product was placed in a vacuum drying oven and dried at 60°C to obtain nano zero Valence iron;
[0148] Step 2: Take 220 mg of nano-zero-valent iron in Step 1, place it in 0.1mol / L hydrochloric acid solution for 3 minutes, and wash it quickly with deionized water to neutrality (pH test paper test); transfer the product into a round bottom Add 180mL of absolute ethanol, 50mL of water, 5mL of ammonia water (28%), and 5mL of ethyl orthosilicate to ...
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