| abstract |
The invention relates to a preparation method of a graphene oxide modified metal sulfide composite photocatalyst, and belongs to the technical field of photocatalysts. After the pyrite was ball-milled for 5 minutes, it was passed through a 100-mesh sieve, washed six times with ultrapure water (volume 1:5), and put into a freeze dryer for drying for 48 hours. Graphene was prepared into 12 mg/mL with ultrapure water, ultrasonicated for 30 min, then 1 mL was added with 0.2 g of pyrite, ground with a mortar for 5 min, and put into a fume hood to air dry to obtain a composite photocatalyst. The photocatalyst of the invention can be applied to photocatalytic degradation of rhodamine in dye wastewater. Under the condition of simulated sunlight at room temperature, it has better photocatalytic activity than pure pyrite catalyst, and the degradation rate can be increased by 64%. |