Doped graphene hydrogel and preparation method thereof

[0022] Stir and disperse graphene and distilled water in a ratio of 2:1 to obtain a graphene aqueous solution with a concentration of 3.2mg / mL, then weigh 500ml of the obtained graphene aqueous solution and place it in a beaker, and heat the graphene aqueous solution through a heating furnace While stirring, the temperature inside the heating furnace is controlled at 120-180°C, and the stirring time is 0.5-2h. While stirring, silver sulfide quantum dot stock solution is added to the beaker, and the addition speed of silver sulfide quantum dot stock solution is 30mL / min, continuous addition for 10 minutes;

[0023] When the stirring is completed, it is cooled, and the cooled preliminary doped graphene hydrogel containing silver sulfide quantum dots is filtered to obtain graphene hydrogel doped with silver sulfide quantum dots, and the doped silver sulfide quantum dots are observed. Point the graphene hydrogel, and the shape of the graphene hydrogel is good at this time;

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[0026] Graphene and distilled water are stirred and dispersed according to the ratio of 2:1 to obtain a graphene aqueous solution with a concentration of 3.2mg / mL, then weigh 500ml of the obtained graphene aqueous solution and place it in a beaker, and heat the graphene aqueous solution by a heating furnace At the same time and start stirring, the temperature inside the heating furnace is controlled at 120-180°C, and the stirring time is 0.5-2h. While stirring, add the silver sulfide quantum dot stock solution to the beaker, and the addition speed of the silver sulfide quantum dot stock solution is 20mL / min, keep adding for 15 minutes;

[0027] When the stirring is completed, it is cooled, and the cooled preliminary doped graphene hydrogel containing silver sulfide quantum dots is filtered to obtain graphene hydrogel doped with silver sulfide quantum dots, and the doped silver sulfide quantum dots are observed. Point the graphene hydrogel, and the shape of the graphene hydro

[0030] Graphene and distilled water are stirred and dispersed according to the ratio of 2:1 to obtain a graphene aqueous solution with a concentration of 3.2mg / mL, then weigh 500ml of the obtained graphene aqueous solution and place it in a beaker, and heat the graphene aqueous solution by a heating furnace At the same time, start stirring. The temperature inside the heating furnace is controlled at 120-180°C, and the stirring time is 0.5-2h. While stirring, add the silver sulfide quantum dot stock solution to the beaker, and the addition speed of the silver sulfide quantum dot stock solution is 30mL / min, keep adding for 15 minutes;

[0031] When the stirring is completed, it is cooled, and the cooled preliminary doped graphene hydrogel containing silver sulfide quantum dots is filtered to obtain graphene hydrogel doped with silver sulfide quantum dots, and the doped silver sulfide quantum dots are observed. Point the graphene hydrogel, and the graphene hydrogel form will br