| abstract |
The invention discloses a preparation method of a ZIF-8@g-C3N4 catalyst with a zeolite structure, comprising: grinding urea uniformly; transferring it to an alumina crucible with a lid, and calcining at 475-550° C. for 2-4 hours in an air atmosphere, Then cool down to room temperature to obtain layered g-C3N4; respectively weigh barbitic acid, zinc nitrate, dimethylimidazole and g-C3N4, disperse g-C3N4 in methanol solution, ultrasonically treat, then add barbitic acid to In the mixed solution, stir evenly; dissolve zinc nitrate in the above mixed solution and continue to stir evenly; at the same time, dissolve dimethylimidazole in methanol solution and stir evenly; under stirring condition, add dimethylimidazole solution dropwise to g- C3N4, barbitic acid and zinc nitrate mixed solution, then stirred at room temperature, and allowed to stand; centrifuged, repeatedly washed with methanol and absolute ethanol, vacuum-dried, and ground to obtain ZIF-8@g-C3N4 composite catalyst material. The composite photocatalyst of the invention can be separated, recovered and recycled, and the preparation method is simple, the controllability is strong, and the large-scale production can be easily realized. |