Enhancing Visible-Light Photodegradation of TC-HCl by Doping Phosphorus into Self-Sensitized Carbon Nitride Microspheres

作者：Xiangyu Chen, Xiuru Yang, Jianhao Wu, Zhi Chen, Lan Li, Jingyang Gao, Jinchao Chen, Jinglei Hu, Chunyan Li, Wen Wang · 发表于：Processes · 年份：2023 · DOI：10.3390/pr11020298 · 被引用次数：2 · 研究领域：Advanced Photocatalysis Techniques、Luminescence and Fluorescent Materials、Covalent Organic Framework Applications

SSCN is a new type of self-sensitive photocatalyst. It consists of oxygenated carbon nitride-containing microspheres inside and polymerized triazine dye (TBO) formed on its surface by in situ polymerization. The presence of TBO endows SSCN with a wide range of optical responses. However, the TBO would self-degrade under light, making SSCN extremely unstable in photocatalytic reactions and limiting the practical application of SSCN. The introduction of phosphorus into the structure of SSCN significantly improved the electron–hole separation efficiency and reduced the self-degradation of surface TBO. Phosphorus-doped self-sensitive carbon nitride microspheres (P-SSCN) are easily synthesized by a one-pot solvothermal method—the phosphorus source was added to the precursor solution of SSCN. This resulting material was used for the photodegradation of tetracycline hydrochloride (TC-HCl) for the first time, giving improved visible light sensitivity and high stability in the photocatalytic process. This provides a new method for modifying self-sensitive carbon nitride carbon.