A kind of preparation method of graphene/antimony sulfide composite photocatalyst
A technology of graphene and antimony sulfide, which is applied in the field of photocatalysis, can solve the problems of low solar energy utilization rate, lower photocatalytic efficiency, and easy compounding, and achieve the effects of excellent product quality, high visible light photocatalytic activity, and simple production process
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Embodiment 1
[0022] (1) Add 30mg of graphene oxide (GO) into 60mL of deionized water, and ultrasonically disperse for 1 hour to prepare a 0.5mg / mL graphene oxide-deionized water dispersion.
[0023] (2) Add 0.26g of thioacetamide to the dispersion, the ratio of deionized water in the dispersion to the amount of sulfur in thioacetamide is 968:1, ultrasonically treat for 5 minutes, then add 0.23g of antimony tartrate Potassium, the ratio of the amount of sulfur in thioacetamide to potassium antimony potassium tartrate is 5:1, and magnetically stirred for 10 minutes to obtain a reaction mixture.
[0024] (3) The reaction mixture was transferred to a reaction kettle with a polytetrafluoroethylene liner, and reacted at 170° C. for 6 hours. After the reaction was completed, it was naturally cooled to room temperature, centrifuged, and the upper liquid was removed to obtain a black precipitate. The black precipitate was washed with deionized water and absolute ethanol alternately and ultrasonical...
Embodiment 2
[0026] (1) 30 mg of graphene oxide (GO) was added to 40 mL of deionized water, and ultrasonically dispersed for 2 hours to prepare a 0.75 mg / mL graphene oxide-deionized water dispersion.
[0027] (2) Add 0.49g L-cysteine to the dispersion, the ratio of deionized water in the dispersion to the amount of sulfur in L-cysteine is 550:1, ultrasonically treat for 6 minutes, then add 0.23 g of antimony potassium tartrate, the ratio of the amount of sulfur in L-cysteine to the amount of antimony potassium tartrate is 6:1, and magnetically stirred for 22 minutes to obtain a reaction mixture.
[0028] (3) The reaction mixture was transferred to a reaction kettle with a polytetrafluoroethylene liner, and reacted at 160° C. for 10 hours. After the reaction was completed, it was naturally cooled to room temperature, centrifuged, and the upper liquid was removed to obtain a black precipitate. The black precipitate was washed with deionized water and absolute ethanol alternately and ul...
Embodiment 3
[0030] (1) 50 mg of graphene oxide (GO) was added to 50 mL of deionized water, and ultrasonically dispersed for 2 hours to prepare a 1 mg / mL graphene oxide-deionized water dispersion.
[0031] (2) Add 0.49g L-cysteine to the dispersion, the ratio of deionized water in the dispersion to the amount of sulfur in L-cysteine is 690:1, ultrasonically treat for 10 minutes, and then add 0.18 g of antimony potassium tartrate, the ratio of sulfur in L-cysteine to the amount of antimony potassium tartrate is 7.6:1, and magnetically stirred for 30 minutes to obtain a reaction mixture.
[0032] (3) The reaction mixture was transferred to a reaction kettle with a polytetrafluoroethylene liner, and reacted at 180° C. for 12 hours. After the reaction was completed, it was naturally cooled to room temperature, centrifuged, and the upper liquid was removed to obtain a black precipitate. The black precipitate was washed with deionized water and absolute ethanol alternately and ultrasonically...
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