Hemin-graphene/poly(3,4-ethylenedioxythiophene) ternary composite synthesized by microwave-assisted method and its preparation
A technology of ethylenedioxythiophene and ternary compound, which is applied in the field of biosensor electrode materials and its preparation, to achieve short time-consuming, low-cost, easy-to-obtain stability, and avoid expensive effects
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Embodiment 1
[0030] (1), add 2.0mghemin to 4mL2.0mgmL -1 Graphene oxide dispersion, slowly add 30 μL of ammonia water (pH9.0) under stirring, and magnetically stir for 3 hours to form a reddish-brown uniformly dispersed mixed solution;
[0031] (2) Add 20mmol EDOT to the above dispersion liquid, and stir it magnetically for 0.5h;
[0032] (3) Transfer the solution obtained in step (2) to a microwave tube for microwave polymerization, set the microwave fixed power to 250W, microwave temperature to 110°C, and time for 5 minutes;
[0033] (4) After the reaction is completed, the microwave tube is cooled to room temperature, and the reaction product of step (3) is centrifuged, filtered and washed, and vacuum-dried at 60°C. The Hemin-graphene / poly(3,4-ethylenedioxythiophene) ternary compound is obtained.
[0034] The ternary compound was passed through X-ray photoelectron spectroscopy (XPS), and the hemin content was measured to be about 15%, the poly(3,4-ethylenedioxythiophene) content was a...
Embodiment 2
[0037] (1), add 2.0mghemin to 4mL2.0mgmL -1 Graphene oxide dispersion, slowly add 30 μL of ammonia water (pH9.0) under stirring, and magnetically stir for 3 hours to form a reddish-brown uniformly dispersed mixed solution;
[0038] (2) Add 30mmol EDOT to the above dispersion liquid, and magnetically stir for 0.5h;
[0039] (3) Transfer the solution obtained in step (2) to a microwave tube for microwave polymerization, set the microwave fixed power to 250W, the microwave temperature to 120°C, and the time to 30min;
[0040] (4) After the reaction is completed, the microwave tube is cooled to room temperature, and the reaction product of step (3) is centrifuged, filtered and washed, and vacuum-dried at 60°C. The Hemin-graphene / poly(3,4-ethylenedioxythiophene) ternary compound is obtained.
[0041]The ternary compound was passed through X-ray photoelectron spectroscopy (XPS), and the hemin content was measured to be about 14%, the poly(3,4-ethylenedioxythiophene) content was ab...
Embodiment 3
[0044] (1) Add 6.2mghemin to 4mL2.0mgmL -1 Graphene oxide dispersion, slowly add 40 μL ammonia water (pH10.0) under stirring, and magnetically stir for 4 hours to form a reddish-brown uniformly dispersed mixed solution;
[0045] (2) Add 50mmol EDOT to the above dispersion liquid, and stir magnetically for 1.5h;
[0046] (3) Transfer the solution obtained in step (2) to a microwave tube for microwave polymerization, set the microwave fixed power to 250W, the microwave temperature to 120°C, and the time to 30min;
[0047] (4) After the reaction is completed, the microwave tube is cooled to room temperature, and the reaction product of step (3) is centrifuged, filtered and washed, and vacuum-dried at 60°C. The Hemin-graphene / poly(3,4-ethylenedioxythiophene) ternary compound is obtained.
[0048] The ternary compound was passed through X-ray photoelectron spectroscopy (XPS), and the content of hemin was measured to be about 28%, the content of poly(3,4-ethylenedioxythiophene) wa...
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