Preparation method for novel nano magnetic cyclodextrin/graphene biological adsorption material
A nano-magnetic and biological adsorption technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of long adsorption time, poor mechanical properties, difficult separation, etc., to improve the adsorption speed and adsorption volume, prevent local agglomeration, and enhance mechanical properties
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example 1
[0018] Example 1: Preparation of magnetic cyclodextrin / graphene adsorption material
[0019] A. Preparation of functionalized graphene
[0020] Weigh 1.0g of graphite powder and add it to 150mL of mixed acid (volume ratio of concentrated nitric acid to concentrated sulfuric acid: 1:6) (in an ice-water bath, add nitric acid first and then sulfuric acid under stirring), stir and react for 20 minutes, then add 5.0g permanganate Potassium, oil bath 85 ° C, heated to reflux, and reacted for 13 hours. Under ice-bath conditions, slowly add hydrogen peroxide dropwise until no more reaction occurs, centrifuge, wash with dilute hydrochloric acid and ethanol in sequence, and dry to obtain functionalized graphene.
[0021] B. Preparation of Magnetic Cyclodextrin / Graphene Adsorbent Material
[0022] 1.5 g of cyclodextrin, 0.5 g of magnetic particles, and 5 mL of glutaraldehyde were added to 30 mL of 10% ammonia water, and stirred at room temperature for 1 h. Take 10 mL of 0.2 mg / mL grap...
example 2
[0023] Example 2: Preparation of magnetic cyclodextrin / graphene adsorption material
[0024] A. Preparation of functionalized graphene
[0025] Weigh 1.0g of graphite powder and add it to 150mL of mixed acid (volume ratio of concentrated nitric acid to concentrated sulfuric acid: 1:5) (in an ice-water bath, add nitric acid first and then sulfuric acid under stirring), stir for 30 minutes, then add 6.0g of permanganic acid Potassium, oil bath at 90°C, heated to reflux, reacted for 15h. Under ice-bath conditions, slowly add hydrogen peroxide dropwise until no more reaction occurs, centrifuge, wash with dilute hydrochloric acid and ethanol in sequence, and dry to obtain functionalized graphene.
[0026] B. Preparation of Magnetic Cyclodextrin / Graphene Adsorbent Material
[0027] 2.0 g of cyclodextrin, 0.5 g of magnetic particles, and 6 mL of glutaraldehyde were added to 30 mL of 15% ammonia water, and the reaction was stirred at room temperature for 1.5 h. Take 10mL of 0.3mg / m...
example 3
[0028] Example 3: Preparation of magnetic cyclodextrin / graphene adsorption material
[0029] A. Preparation of functionalized graphene
[0030] Weigh 1.0g of graphite powder and add it to 150mL of mixed acid (volume ratio of concentrated nitric acid to concentrated sulfuric acid: 1:3) (in an ice-water bath, add nitric acid first and then sulfuric acid under stirring), stir and react for 50 minutes, then add 7.0g permanganate Potassium, oil bath 100 ° C, heated to reflux, and reacted for 16 hours. Under ice-bath conditions, slowly add hydrogen peroxide dropwise until no more reaction occurs, centrifuge, wash with dilute hydrochloric acid and ethanol in sequence, and dry to obtain functionalized graphene.
[0031] B. Preparation of Magnetic Cyclodextrin / Graphene Adsorbent Material
[0032] 2.5 g of cyclodextrin, 0.5 g of magnetic particles, and 10 mL of glutaraldehyde were added to 30 mL of 20% ammonia water, and stirred at room temperature for 2 h. Take 10mL of 0.5mg / mL grap...
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