Preparation and application of fluorescent magnetic graphene oxide based 4-chlorophenol molecularly imprinted polymer
A technology of imprinting polymers and chlorophenol molecules, applied in the direction of magnetic properties of alkali metal compounds, alkali metal oxides/hydroxides, organic materials/organic magnetic materials, etc., can solve problems such as endangering water safety and achieve mass transfer rates Fast, simple operation, short diffusion distance effect
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Embodiment 1
[0029] A preparation method of fluorescent magnetic graphene oxide-based 4-chlorophenol molecularly imprinted polymer, the specific steps of the preparation method are as follows:
[0030] 1) Preparation of graphene oxide:
[0031] Add 23mL of concentrated sulfuric acid with a mass concentration of 98% in the three-necked flask, put it in an ice bath and cool it below 4°C, add 1g of natural graphite flakes and 0.5g of sodium nitrate under mechanical stirring, and add 3g of high manganese after stirring for 1 hour Potassium acid, control the temperature of the reaction solution at 10-15°C, stir for 2 hours, raise the temperature of the reaction solution to 35°C, add 80mL of deionized water after 30 minutes of reaction, raise the temperature of the reaction solution to 95°C, and react for 30 minutes. After the color of the reaction solution turns golden yellow, add 60mL of deionized water to dilute the reaction solution to terminate the reaction, and then add a certain amount of...
Embodiment 2
[0039] A preparation method of fluorescent magnetic graphene oxide-based 4-chlorophenol molecularly imprinted polymer, the specific steps of the preparation method are as follows:
[0040] 1) Preparation of graphene oxide: Same as Example 1.
[0041] 2) Preparation of magnetic graphene oxide: same as Example 1.
[0042] 3) Synthesis of cadmium telluride quantum dots: same as in Example 1.
[0043] 4) Preparation of fluorescent magnetic graphene oxide-based 4-chlorophenol molecularly imprinted polymer:
[0044] Ultrasonic disperse 2.0 g of cadmium telluride quantum dots prepared in step 3) in a 0.05 mol / L polyethylene glycol (mPEG-SH) solution, react at room temperature for 24 hours, and then add 0.50 g of cadmium telluride quantum dots prepared in step 2) Magnetic graphene oxide and 100ml of ethanol, mechanically stirred for 30min, 5.0mmol of 3-aminopropyltriethoxysilane and 2.0mmol of 4-chlorophenol were dissolved in 80mL of ethanol solvent, and 5.0mL of orthosilicon Ethyl...
Embodiment 3
[0046] A preparation method of fluorescent magnetic graphene oxide-based 4-chlorophenol molecularly imprinted polymer, the specific steps of the preparation method are as follows:
[0047] 1) Preparation of graphene oxide: Same as Example 1.
[0048] 2) Preparation of magnetic graphene oxide: same as Example 1.
[0049] 3) Synthesis of cadmium telluride quantum dots: same as in Example 1.
[0050] 4) Preparation of fluorescent magnetic graphene oxide-based 4-chlorophenol molecularly imprinted polymer
[0051] Ultrasonic disperse 1.0 g of cadmium telluride quantum dots prepared in step 3) in a 0.05 mol / L polyethylene glycol (mPEG-SH) solution, react at room temperature for 16 hours, and then add 0.25 g of cadmium telluride prepared in step 2) Magnetic graphene oxide and 50ml of ethanol, mechanically stirred for 30min, 2.5mmol of 3-aminopropyltriethoxysilane and 1.0mmol of 4-chlorophenol were dissolved in 40mL of ethanol solvent, and 2.5mL of orthosilicon Add ethyl acetate to...
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