Construction of 2D/3D PCN/CN Homojunction and Its Performance in Visible Light Degradation of Tetracycline
The development of highly efficient photocatalysts for the degradation of organic pollutants in water is a cur-rent research hotspot in environmental remediation.In this study,a non-metallic 2D/3D g-C3 N4/g-C3 N4 homojunction photocatalyst(2D/3D PCN/CN)was synthesized via a solvothermal method and an in-situ surface polymerization strate-gy.The prepared photocatalyst exhibited excellent photocatalytic degradation performance of tetracycline hydrochloride(TC-HCI)under visible light irradiation,with a significantly enhanced degradation rate compared to individual 2D PCN(55.19%)and 3D CN(16.6%)counterparts.Comprehensive characterization techniques were employed to analyze the physicochemical properties of the photocatalyst in detail.Five-cycle tests demonstrated that the 2D/3D PCN/CN-3 homo-junction possessed both efficient and stable photocatalytic degradation capabilities.The photocatalytic mechanism was further elucidated by analyzing the band structure and the separation and migration mechanisms of photogenerated charge carriers.This study provides a new perspective for the development of efficient and stable photocatalysts.