Cellulose chitosan composite UiO-66-NH2 microsphere as well as preparation method and application thereof

The invention discloses a cellulose chitosan composite UiO-66-NH2 microsphere as well as a preparation method and application thereof, and the preparation method of the cellulose chitosan composite UiO-66-NH2 microsphere comprises the following steps: adding chitosan and cellulose into an organic solution to form a viscous solution; adding the viscous solution into an ethanol water solution of sodium hydroxide to form transparent microspheres; washing to be neutral, and drying to obtain cellulose chitosan composite microspheres; zrCl4 and 2-aminoterephthalic acid are dissolved in DMF and stirred to be dissolved, and a reaction solution is obtained; and transferring the reaction liquid and the cellulose chitosan composite microspheres into a reaction kettle for reaction, filtering or centrifuging to obtain microspheres, and drying to obtain the cellulose chitosan composite microspheres. The dye is adsorbed by utilizing the acting force between the cellulose chitosan functional group amino and carboxyl and dye