Preparation method of magnetic reduced graphene oxide-beta-cyclodextrin adsorption material
An adsorption material, cyclodextrin technology, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc. The effect of low cost, green preparation process and low price
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Embodiment 1
[0021] A magnetic RGO‐β‐CD adsorption material is prepared by the following steps:
[0022] (1) Weigh 500 mg of graphene oxide and dissolve it in a 250 mL volumetric flask, constant volume, and sonicate the above 2 mg / mL graphene oxide for 2 h to prepare a reduced graphene oxide solution.
[0023] (2) 100 mL of the 2 mg / mL reduced graphite oxide solution prepared above was added dropwise with 1 mol / L of FeCl under the condition of magnetic stirring 2 Solution 10ml, and ultrasonic cleaning machine ultrasonic 60min, make it dispersed evenly, get RGO-FeCl 2 Dispersions;
[0024] (3) Add 2 g of β-cyclodextrin and 2 mL of ammonia water to the above mixed solution to adjust the pH, and stir at room temperature for 0.5 h.
[0025] (4) Add 120 mg of ascorbic acid, and sonicate for 15 minutes.
[0026] (5) Take 2.5mL of the above solution in a 5mL beaker, put it in a water bath, and react in a water bath at 90°C for 4h to prepare a magnetic reduced graphene oxide-β-cyclodextrin adso...
Embodiment 2
[0028] A magnetic RGO‐β‐CD adsorption material is prepared by the following steps:
[0029] (1) Weigh 1000mg of graphene oxide and dissolve it in a 250mL volumetric flask, constant volume, and sonicate the above 4mg / mL graphene oxide for 4h to prepare a reduced graphene oxide solution.
[0030] (2) 100mL of the 4mg / mL reduced graphite oxide solution prepared above was added dropwise with 2mol / L of FeCl under the condition of magnetic stirring 2 Solution 10ml, and ultrasonic cleaning machine ultrasonic 60min, make it dispersed evenly, get RGO-FeCl 2 Dispersions;
[0031] (3) Add 4 g of β-cyclodextrin and 2 mL of ammonia water to the above mixed solution to adjust the pH, and stir at room temperature for 1 h.
[0032] (4) Add 240 mg of ascorbic acid, and sonicate for 30 minutes.
[0033] (5) Take 2.5mL of the above solution in a 5mL beaker, place it in a water bath, and react in a water bath at 90°C for 6h to prepare a magnetic reduced graphene oxide-β-cyclodextrin adsorption...
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