Bionic design bamboo charcoal/BiOCl composite photocatalyst based on bamboo growth as well as preparation method and application of biomimetic design bamboo charcoal/BiOCl composite photocatalyst

The invention discloses a biomimetic design bamboo charcoal/BiOCl composite photocatalyst based on bamboo growth and a preparation method and application thereof.The composite photocatalyst is formed by compounding bamboo charcoal and BiOCl, and the preparation method of the composite photocatalyst comprises the following steps that phosphoric acid is adopted to activate bamboo sawdust to prepare the bamboo charcoal; and then putting the bamboo charcoal into a bismuth salt solution, and synthesizing the BC/BiOCl composite photocatalyst by adopting a solvent method. The composite photocatalyst has excellent adsorption and visible light performance, multiple surface oxygen vacancies and good photon-generated carrier shunting effect, on one hand, pollutants are rapidly adsorbed by means of the high specific surface area and the rich pore structure of bamboo charcoal, and the photocatalytic reaction rate is increased by increasing the local concentration of the pollutants; on the other hand, a large number of oxy