| abstract |
The invention discloses a heterojunction composite photocatalyst, a preparation method thereof and an application in a working electrode material of a photoelectric chemical conversion system and a catalytic material for photocatalytically degrading organic pollutants. Dissolve Ni(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 ·9H 2 O, urotropine and trisodium citrate in deionized water, then add graphene quantum dot aqueous solution, and conduct Preparation of GQDs/NiFe 2 O 4 nanosheet composites; adding it to graphene oxide aqueous solution, the reaction reduces GO to rGO, and forms a 3D network structure, while GQDs/NiFe 2 O 4 nanosheet composites are supported on graphene slices. The catalyst has a high specific surface area and high conductivity, effectively inhibits the recombination of photogenerated electrons and holes, broadens the range of light absorption, improves photocatalytic activity, and can realize resource utilization and energy conversion of wastewater. |