Magnetic mesoporous silica surface-imprinted polymer adsorbing material and preparation method thereof
A technology of mesoporous silica and surface imprinting, applied in chemical instruments and methods, selective adsorption, chemical/physical processes, etc., can solve the problems of easy agglomeration, difficult recovery, and secondary pollution of nanomaterials, and achieve selective adsorption. Strong, low cost, good regeneration effect
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Embodiment 1
[0016] Take 100mL of distilled water into a three-necked flask, pass nitrogen gas for 20min, then add 4.3g of ferric chloride hexahydrate and 1.7g of ferrous chloride tetrahydrate, heat up to 70°C, add 10mL of ammonia water, stir at constant temperature for 30min, then add 0.8mL of oleic acid, Continue the constant temperature reaction for 3 hours to obtain a dispersion of ferric oxide, and obtain magnetic particles of ferric oxide after centrifugation. Disperse 3.0g of ferric ferric oxide magnetic particles in 500mL of deionized water and ultrasonically treat it for 30min, then add 5g of cetyltrimethylammonium bromide, add 100mL of ammonia water after ultrasonic treatment for 60min, stir and heat to 40°C, and finally 100 mL of ethyl orthosilicate was slowly added dropwise, stirred for 2 hours, and then the product was washed with water and dried to obtain magnetic mesoporous silica.
[0017] Disperse 2.5g of magnetic mesoporous silica in 50mL of anhydrous toluene, then add 10...
Embodiment 2
[0020] Take 100mL of distilled water into a three-necked flask, pass nitrogen gas for 20min, then add 4.3g of ferric chloride hexahydrate and 1.7g of ferrous chloride tetrahydrate, heat up to 70°C, add 10mL of ammonia water, stir at constant temperature for 30min, then add 0.8mL of oleic acid, Continue the constant temperature reaction for 3 hours to obtain a dispersion of ferric oxide, and obtain magnetic particles of ferric oxide after centrifugation. Disperse 3.0g of ferric ferric oxide magnetic particles in 500mL of deionized water and ultrasonically treat it for 30min, then add 10g of cetyltrimethylammonium bromide, add 150mL of ammonia water after ultrasonic treatment for 60min, stir and heat to 40°C, and finally 150 mL of tetraethyl orthosilicate was slowly added dropwise, stirred and reacted for 3 hours, and the product was washed with water and dried to obtain magnetic mesoporous silica.
[0021] Disperse 2.5g of magnetic mesoporous silica in 50mL of anhydrous toluene...
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