Poly (N-phenylglycine)-biochar composite material as well as preparation method and application thereof

The invention belongs to the technical field of functional biochar material preparation, and particularly relates to a poly (N-phenylglycine)-biochar composite material as well as a preparation method and application thereof. The method specifically comprises the following steps: preparing biochar by taking biomass as a raw material; the preparation method comprises the following steps: dispersing an N-phenylglycine monomer in isopropanol, adding biochar into the isopropanol, uniformly mixing to obtain a mixed solution, dropwise adding an ammonium persulfate solution into the mixed solution, carrying out a polymerization reaction on the N-phenylglycine monomer, and washing and drying after the polymerization is finished to obtain the poly N-phenylglycine-biochar composite material. The preparation method comprises the following steps: by taking wheat straw as a biomass raw material, preparing biochar by adopting an oxygen-limited high-temperature pyrolysis method, then successfully preparing a poly (N-phenylg