Application of g-C3N4 for remediating polycyclic aromatic hydrocarbon polluted soil

The invention belongs to the technical field of soil remediation and particularly relates to application of g-C3N4 for remediating polycyclic aromatic hydrocarbon polluted soil. G-C3N4 is a nonmetallic photocatalyst capable of responding to visible light and thus is suitable for remediating the polycyclic aromatic hydrocarbon polluted soil. G-C3N4 can respond to the visible light, so that sunlightcan be maximally utilized. G-C3N4 contains no heavy metals, so that secondary pollution caused by heavy metals to the soil is avoided when g-C3N4 is used for remediating the polluted soil. Remediation of the polycyclic aromatic hydrocarbon polluted soil by g-C3N4 comprises the following steps: detecting the polluted soil, crushing and sieving the polluted soil, mixing g-C3N4 with the polluted soil, spreading the mixed soil and removing polycyclic aromatic hydrocarbon in the soil by illumination. According to a g-C3N4-based polycyclic aromatic hydrocarbon polluted soil remediation method, thephytotoxicity of pollutant