A molecularly imprinted polymer based on porphyrin functionalized carbon nanotubes and its preparation method and application
A technology of carbon nanotubes and molecular imprinting, which is applied in the field of molecularly imprinted polymers and their preparation, to achieve the effects of high specific selectivity and reusability, cheap and easy-to-obtain raw materials, and good water dispersibility
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[0034] The invention provides a method for preparing molecularly imprinted polymers based on porphyrin functionalized carbon nanotubes, using porphyrin-metal complex functionalized carbon nanotube composite materials as base materials, and using dopamine as functional monomers and crosslinking agents , using the surface molecular imprinting technology of the fixed template method, by adjusting the ratio of carbon nanotubes to porphyrin, the amount of DA, the polymerization time of DA, etc., the porphyrin-based functionalized carbon nanotubes with controllable photoremoval rate of template molecules can be prepared. Molecularly imprinted polymers.
[0035] Specifically, a method for preparing a molecularly imprinted polymer based on porphyrin functionalized carbon nanotubes, comprising the following steps:
[0036] 1) adding an aqueous solution of rhodamine 6G (Rh6G) to the porphyrin-metal complex functionalized carbon nanotube composite (MPT), ultrasonically mixing, and pre-ad...
Embodiment 1
[0049] A method for preparing molecularly imprinted polymers based on porphyrin functionalized carbon nanotubes, comprising the following steps:
[0050] 1) The aqueous solution of Rh6G (0.005mmol·L -1 , 10mL) into MPT (15mg), ultrasonically mixed, ultrasonic power 100W, ultrasonic temperature 16°C, ultrasonic time 10min, and pre-adsorption for 30min;
[0051] 2) Add DA (30mg) to the mixture prepared in step 1), then add 30mL Tris-HCl (10mmol·L -1 , pH=7.5) buffer solution, ultrasonic treatment (ultrasonic power 100W, ultrasonic temperature 16 ℃, ultrasonic time 10min), to obtain a uniform dispersion;
[0052] 3) At room temperature, magnetically stir the dispersion (200 rpm), react for 4 hours, and centrifuge after the reaction to obtain a solid product;
[0053] 4) washing and drying the solid product, then dispersing it with deionized water, and irradiating it with a xenon lamp light source under visible light (400-780nm);
[0054] 5) After the light is finished, the sol...
Embodiment 2
[0056] A method for preparing molecularly imprinted polymers based on porphyrin functionalized carbon nanotubes, comprising the following steps:
[0057] 1) The aqueous solution of Rh6G (0.01mmol·L -1 , 10mL) into MPT (15mg), ultrasonically mixed, ultrasonic power 120W, ultrasonic temperature 20°C, ultrasonic time 20min, and pre-adsorption for 50min;
[0058] 2) Add DA (90mg) to the mixture prepared in step 1), and then add 30mL Tris-HCl (10mmol·L -1 , pH=8.5) buffer solution, ultrasonic treatment (ultrasonic power 120W, ultrasonic temperature 20 ℃, ultrasonic time 20min), to obtain a uniform dispersion;
[0059] 3) At room temperature, magnetically stir the dispersion (400 rpm), react for 8 hours, and centrifuge after the reaction to obtain a solid product;
[0060] 4) washing and drying the solid product, then dispersing it with deionized water, and irradiating it with a xenon lamp light source under visible light (400-780nm);
[0061] 5) After the light is finished, the ...
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