The invention discloses self-doped adjustable N
sophora flavescens
biochar as well as a preparation method and application thereof, and belongs to the technical field of advanced oxidation catalysts. The invention relates to self-doped N-adjustable
sophora flavescens
biochar, which is
biochar with a plurality of functional groups on the surface. The functional groups comprise
oxygen-containing functional groups and
nitrogen-containing functional groups; wherein the
oxygen-containing groups comprise C = O, and the content of C = O accounts for more than 18% of the content of the
oxygen-containing functional groups; the
nitrogen-containing functional group comprises
pyrrole N, and the
pyrrole N accounts for more than 40% of the
nitrogen-containing functional group. According to the method, multiple functional groups such as C = O,
pyrrole, carboxyl and
graphite nitrogen are constructed on the surface of the
sophora flavescens residue biochar through
calcination regulation and control, so that the Cl <->
interference resistance of biochar activated PMS to degrade
antibiotics is improved, the practicability is higher, and the activation efficiency and the degradation efficiency are improved. Besides, the lightyellow
sophora root dregs can influence the environment when being randomly treated as
biomass wastes, so that the invention not only provides an ideal
traditional Chinese medicine residue
biomass resource utilization method, but also achieves the effect of treating wastes with wastes in treating organic wastes in water by utilizing an adsorption-
catalysis bifunctional material prepared from the
biomass wastes.