Preparation method and application of photo-directionally induced carbon nitride coupled chlamydomonas nano photocatalytic composite material

The invention discloses a preparation method and application of a photo-directionally induced carbon nitride coupled chlamydomonas nano photocatalytic composite material. The preparation method comprises the following steps: synthesizing g-C3N4 through a muffle furnace, then carrying out ultrasonic exfoliation to obtain ultrathin nanosheets, stirring and mixing chlamydomonas cultured to a logarithmic phase with the ultrathin nanosheets, and loading g-C3N4 nanoparticles on the surfaces of chlamydomonas cells to construct a chlamydomonas/carbon nitride binary composite nano photocatalytic material system with a photo-induced directional movement property. The chlamydomonas/carbon nitride binary composite nano photocatalytic material system provided by the invention has the advantages of high light source utilization rate, excellent photocatalytic degradation performance, stable performance and the like, and the composite material has the advantages of light-induced directional movement, easiness in practical ap