Preparation method and application of carbon nitride quantum dot loaded hierarchical pore inverse opal structure CuO-SiO2

The invention provides a preparation method of a CuO-SiO2 with a carbon nitride quantum dot loaded hierarchical pore inverse opal structure. According to the method, a macroporous structure is synthesized by taking ordered polystyrene spheres as hard templates through a double-template method, and a long-chain surfactant is taken as a mesoporous forming agent. The template is removed from a Cu-Siprecursor solution containing a mesoporous template agent F127 and g-C3N4 quantum dots by using a calcining method through an impregnation method to obtain the g-C3N4 quantum dot loaded three-dimensional interconnected macroporous-mesoporous material. According to the method, the sizes of macropores and mesopores can be controlled simply by changing the particle sizes of the soft and hard templates, the prepared hierarchical porous material has the characteristics of high mass transfer rate and strong visible light absorption, and the separation efficiency of photon-generated carriers can be improved and the light abs